does a dolphin have a backbone

As seen in the image above, the dolphin has many features to its skeletal system. A dolphin has a three chambered stomach, similar to an ungulate (cow or deer), pointing further to its evolution from a terrestrial ancestor. After the hair falls out hair follicles can still be seen on the dolphins face and snout. Fish, reptiles, birds, amphibians and mammals are different sub-groups of vertebrates - they all have internal skeletons and backbones. A vertebrate is any animal having a backbone and an internal skeleton. The skeleton still retains vestiges of a terrestrial life, like a pair of floating bones under the backbone that should have been a pelvis. The Amazon river dolphin (Inia geoffrensis) has a pink color on its skin, therefore is known as the “pink dolphin.” Also, some species have stripes or spots of different sizes, colors, and shapes. Hanging from the backbone, up toward the front of the whale, is the rib cage. Answer (1 of 3): Dolphins are mamals so they have bones like we do. The difference is that porpoises are smaller animals and have rounder snouts than dolphins. It is also why their tail fins are horizontal and not vertical like those of fish. They are the organ of the respiratory system which process the air inhaled through the spiracle. Found inside – Page 110The one similarity that all vertebrates—no matter the shape or size— share is a skeletal structure with a backbone. 1. Circle the quote from the passage that best defines a vertebrate. a.Vertebrates are animals that have backbones. b. The bone structure of dolphins is lighter than that of terrestrial mammals as it has to withstand less weight in the water. So, this procedure does not bother a dolphin. Intestines. Found inside – Page 31TEETH Dolphins and porpoises have very different teeth . ... The bottle - nosed dolphin is an exception , since its The backbone In land mammals , the backbone acts as a firm girder that supports the animal's weight . 1 1. Found inside – Page 400The scad has a spiny ridge of plate - like scales extending laterally over the whole length of the body , along with ... all it proves is that one poet misidentified as gills a dolphin's flippers ( which emerge from the side of the body ... Mammals include a wide variety of animals, from cats to humans to whales. how long does it take to make anti matter but a hint it takes trillions of years? A dolphin is a mammal and thus has a backbone like all mammals, us included. On the other hand, the body of the dolphins is fusiform and hydrodynamic, perfectly adapted to life in the water. Invertebrates don't have a backbone. Its skeleton is long and thick. warm-blooded animals. Blowhole. They either have a soft body, like worms and jellyfish, or a hard outer casing covering their body, like spiders and crabs. Do all dogs have the same amount of vertebrae? The lower jaw bone of a sperm whale. All living vertebrate animal species fall into one of five categories: The larvae also have gills to breathe underwater. Just like humans, frogs have bones in their body and they also have a spine. Peduncle. Despite this, it is extremely sensitive due to a large number of nerve endings it has on the exterior. View this answer. Found inside – Page 192In size and shape , some scholars have described this dolphin as a miniature Beluga ( Monodontidae : Delphinapterus leucas ) , but they ... The last 1 or 2 pairs of ribs do not articulate with the backbone and are therefore floating . Found inside – Page 6In addition to a backbone, all mammals have fur or hair at some point in their life. Believe it or not, even dolphins have whiskers, or hair that grows near their mouth. These whiskers fall out soon after a dolphin is born. http://bit.ly/2gG1vkBSofie is a self-tau. Dorsal fin. Sponges, corals, worms, insects, spiders and crabs are all sub-groups of the invertebrate group - they do not have a backbone. Found inside – Page 17It is stated that those of our race who have long subsisted on vegetable food have , in consequence , the salivary ... The length of this canal , as compared to the length of the backbone , is one very important fact , contrasting the ... All species of dolphins do not have a gall bladder and appendix. FREE shipping & returns. If that isn't what "vertebrate" means? Tagged: why don't ostriches fly, reptiles vs amphibians, difference reptiles amphibians, why is a whale a mammal, why is a dolphin a mammal, do dolphins have hair, are dolphins fish, vertebrates lesson plans elementary It is the narrow section that connects the flukes with the rest of the body. Their skin feels like rubber, and they don’t have any sweat glands. Play games like Call of Duty: Mobile, Minecraft, and Roblox on the go. Located on each side of the head, they provide a broad field of view and are very sensitive despite the inability to identify colors. Why do whale and dolphin tails go up and down? It has a kind of muscular membrane that prevents water from entering the body when the dolphin is submerged. There's a lot of discussion on these boards about other 16' skiffs like the Glide, BT Micro and Skull Island, so I figured this boat should be thrown into the mix. Dolphins have a backbone, so they are in this phylum. animals that DO NOT have a backbone; porifera, cnidarian, echinoderm, mollush, worm, arthropod Fish animals that have a backbone, spend their entire lives in the water, breathes with gills, and have fins and scales. Mouth: Bottlenose Dolphins have a long mouth, which is perfect for grabbing their main prey, fish. Sometimes, Bottlenose Dolphins appear to "smile" Rostrum: a dolphin's rostrum is often referred to as the "beak" or "nose." it is the projection created by the dolphin's upper jaw and lower jaw. Invertebrates are any other animal that is classified outside of that class. A crab has no bones inside its body but a hard shell outside its body to protect it. Some of the these features are its back bone, skull, rib, teeth and jaw. Just as in other mammals, they serve to absorb nutrients from the food and remove the unused material from it. Sponges, corals, worms, insects, spiders and crabs are all sub-groups of the invertebrate group - they do not have a backbone. Found inside – Page 23(iii) Vertebrates have unique backbone along with spinal cord while in invertebrate backbone is absent. ... Seal, Shark, Dolphin [ICSE 2020] (v) Ascaris, Planaria, Liver-fluke, Tapeworm Ans. (i) Starfish is an invertebrate while others ... Here are some of the little known dolphin facts you'll learn: Which species of dolphin swims sideways. Digestive System. I am unfortunately not able to test out the backbone one controller with dolphin as the recent update to IOS broke the dolphin app for the time being but I have used it on my Iphone 12 Pro Max before and it worked pretty flawlessly. an animal with a backbone whose body temperature changes with the temperature of the water or air around them. The pink colour originates not from a pigment, but from blood vessels which were overdeveloped for thermoregulation.The body length is 2 to 3.5 m (6 ft 7 in to 11 ft 6 in) for adults 1 m (3 ft 3 in) for . Sometimes it appears that a Bottlenose Dolphin is . However, dolphins do not chew their cud. To be a mammal, an animal must have hair at some point in its life, nurse their young with milk, be warm-blooded (a term used for describing an animal that can regulate its own body temperature), breathe air, and, in most cases, give birth to live . Animals that lack a backbone are called invertebrates. an animal with a backbone that has a dry, scaly skin. Mouth. Given this fragility, it damages very easy with any contact of a rough surface and even human fingernails, but if this happens, the healing process is fast and develops a dark scar in the tissue, which later turns white. Evolutionarily the first vertebratess . Found inside – Page 129For instance , because Flipper's ancestors lived on land acounts for his having to come up to the surface to breathe air ... But his thinking department is strictly dolphin , which is land style , and far and away better than any fish's ... The major groups include fish, amphibians, reptiles, birds and mammals. Fish, reptiles, birds, amphibians and mammals are different sub-groups of vertebrates - they all have internal skeletons and backbones. Some of the smaller ones are about 4 feet in length, and others measure as long as 30 feet. Genitals. The major groups include fish, amphibians, reptiles, birds and mammals. , Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on Pocket (Opens in new window), Click to share on Skype (Opens in new window), Gasparilla Sound and Placida Harbor Dolphin Database, Adventures With FL Sealife From Snails2Whales. Sometimes they even eat other marine mammals. Flippers. Read, more elaboration about it is given here. Found inside – Page 10Whales, dolphins, and porpoises are not fish. They are mammals like ourselves. ... Jellyfish are not fish . . . nor are starfish— neither have a backbone or gills. ... is. Not. a. Fish? Getting About Forward Power . . . Most fish swim. mammal. Found inside – Page 9Do you know that some animals do not have backbones and some animals do 8 This animal that I am going to tell you about hasn't a backbone . ... The dolphin is a big fish that is about six feet long and is blue in color . The skin of dolphins feels soft to the touch although it has a thick epidermis covered with a thin layer of cornified cells. Dolphins have an adjustable rib cage, thanks to which they can swim in low-pressure environments without suffering damage. Anatomy of Dolphins: Insights into Body Structure and Function. See full answer below. Digestive System. Definitely not made of cartilage. Populations along the coasts of China and Thailand have been observed with pink skin. Some species of dolphins can have as many as 252 teeth while at the other extreme, some species can have as few as 4 to 14 . Yes, chickens, and all birds, are vertebrates, which means that they have backbones. What will happen when you lighted matches is water? Found inside – Page 73I have a backbone , fins , and scales . I have a long , smooth body ... The only thing we have in common is that we are very tiny , You could see me only through a magnifying glass or a microscope . ... I am a DOLPHIN or PORPOISE . These animals include fish, dolphins, birds, mammals, amphibians, and reptiles. Melon. Found insideOne having no CHARACTER is said to have no backbone. Not only is the backbone the support of the body, ... In occult lore, the dolphin was considered sacred to Apollo, or the Sun—in other words ESSENTIAL TO ENERGY OR CREATIVE POWER. Correspondingly, the animals that do not possess a backbone are called invertebrates. Vertebrates are animals that have a backbone or spinal column, also called vertebrae. It has a hydroskeleton which is fluid support. Definitely not made of cartilage. The tail fin, or fluke, is used for propulsion . Correspondingly, the animals that do not possess a backbone are called invertebrates. They have a two-chambered heart. Found inside – Page 194Possible answer includes, “Because an animal's home doesn't affect whether or not they have a backbone. ... Possible answer includes, “Mammals have live births. ... Possible answer includes, “Did the animal have wings?” 4. U.S GOVERNMENT , U.S HISTORY , U.S RIGHTS , U.S LAWS , U.S CITIZENSHIP .... and more. Dolphins have no gag reflex, since the trachea and esophagus are completely separated. The backbone (or spinal column) is made up of bones known as the vertebrae and hence the animals that have a backbone are called vertebrates. Answer (1 of 2): Yes, all fish have a skeleton which may be soft, made of cartilage (cartilaginous fishes, such as sharks, rays, skate and chimaeras) or hard, made of bones (bony fishes, all the rest). Which animals dont have legs? Found inside – Page 24How Do You Know? Melissa Stewart. Index backbone, 6, 7 calf, 15, 19 fish, 6, 18 fluke, 11, 19 food, 16, 17, 18, 20, 21 gills, 6, 12, 18 lungs, 7, 13, 19 mammal, 7, 19 milk, 7, 15 prey, 17, 19 pup, 14, 18 scales, 8, 18, 19 skin, 8, 9, ... It has three main parts, head, trunk and tail, which include other elements. The caecilian does have a backbone and a skull. This means it can turn its head around 180 degrees. Found inside – Page 29Unlike most other backbone muscle blubber thin layer of skin mammals , dolphins do not have thick coats of hair to keep them warm . Instead , they have a thick layer of insulating fat , or blubber , as shown in this partly dissected ... 3 Maroon clownfish YES Has a backbone, eyes, a mouth, fins, scales, and gills. Does Sofie Dossi have a spine? If you look closely, both the human and canine spines have 7 vertebrae in the neck (cervical), humans have 12 (vs 13 in dogs) vertebrae in the mid back (thoracic spine), and 5 (vs 7 in the canine spine) in the lower back (lumbar spine). Its backbone acts as a firm bar that supports the dolphin's weight. The fresh water dolphin who is pink and lives in the Amazon and it's tributaries, has two upper vertebrae that are not fused. They are the two sections of the caudal fin. Fish, reptiles, birds, amphibians and mammals are different sub-groups of vertebrates - they all have internal skeletons and backbones. The Irrawaddy dolphin is a slow swimmer, but swimming speeds of 20-25 kilometres per hour (12-16 mph) were reported when dolphins were being chased in a boat. It is just in the middle part of the body, and it has several sections. But it doesn't go into the tail. Let’s see: Dolphins vary in weight and size. Some of them weigh about 90 pounds while others tip the scale around 11 tons. The larvae also have gills to breathe underwater. Beneath the skin, there is a thick layer of fat that dolphins use as an energy reserve in periods of food shortage, as an insulation to prevent heat loss in cold environments and as a resource that helps maintain the hydrodynamic shape of their body. There's a lot of discussion on these boards about other 16' skiffs like the Glide, BT Micro and Skull Island, so I figured this boat should be thrown into the mix. The skull's primary function is to protect the brain. The backbone (or spinal column) is made up of bones known as the vertebrae and hence the animals that have a backbone are called vertebrates. The overall anatomy of the dolphin is designed to survive in the water. Once you read these, you'll have everything you need to know about dolphins, and just a bit more. This is called an endoskeleton. An ostrich has a backbone, which makes it a vertebrate. Accordingly, do all animals have a backbone? Vertebrates are animals that have a backbone inside their body. Found insideThe dolphin has bones, and not fish-spine. some as Of the other animals supplied with blood, differ but little, as is the case with birds; ... The serpent is similarly constructed to the fish; in other words, his backbone is spinous. Get unlimited, ad-free homework help with access to exclusive features and priority answers. There are small species as the Maui dolphin, which measures on average 1.7 meters in length and weighs about 50 kilograms, and there are large species that reach 5 to 8 meters in length like the Orca (Orcinus orca) which, by the way, is the largest and heaviest extant dolphin. Biology Q&A Library Character: (1) Backbone (2) Hinged jaw (3) Four limbs (4) Amnion (5) Milk (6) Dorsal Fin *Although adult dolphins have only two obvious limbs, as embryos that have two hind-bud 1. They have a very sensitive skin, which can get easily harmed if hit by rough surfaces. Dolphins do not have a gall bladder and appendix. 1. limbs, for a total of four limbs. Which species can weigh 11 tons and which ones only weigh 350 pounds. The caecilian does have a backbone and a skull. There are a couple of species that lack this dorsal fin. Vertebrates are classified by the chordate subphylum vertebrata. Some of them need to breathe several times a minute, and some species only have to get air twice per hour. They have gills on their underside. Found inside – Page 62Hole at the top of the heads of whales and dolphins. The animals only breathe through ... System of sounds used by animals such as bats and dolphins to find prey and move around in the dark. ... Animals that do not have a backbone. Found inside – Page 48Correct option is (c) Explanation: Tiger does not have scales on their body while snake, lizard and fish have ... Correct option is (c) Explanation: Dolphin (X) lives in water only while Frog (Y) can live both on land and in water. 4. Dolphins have no gag reflex, since the trachea and esophagus are completely separated. As they mature, tadpoles develop legs and lungs, lose the tail, and acquire carnivorous tastes. Found inside – Page 820The dolphin has bones, and not fish-spine. Of the other animals supplied with ... But all sanguineous animals have a backbone of either one kind or other: that is, composed either of bone or of spine. The other portions of the skeleton ... Answer (1 of 3): No, dolphins are mammals with a backbone composed of bony vertebrae. An adult Indo-Pacific humpback dolphin is grey, white or pink and may appear as an albino dolphin to some. But it doesn't go into the tail. After the hair falls out hair follicles can still be seen on the dolphins face and snout. A mammal is an animal that breathes air, has a backbone, and grows hair at some point during its life. It moves from top to bottom and not from side to side as in the case of fish. Unlike fish, whales and dolphins evolved from four-legged animals with limbs underneath their bodies, their backbones naturally bend up and down and not side to side. It is the orifice located at the top of the head that serves to breathe and to make sounds. In the lower part of their body, dolphins have two pectoral flippers which are curved, useful for directing and controlling movements and speed when swimming. Do all dogs have the same amount of vertebrae? WHO KNOWS! The kidneys are large and possess many separate lobes. [Note: if you have already taught Lesson 2, the students will have seen the information on this slide. Found inside – Page 43Is It a Fish ? Have you ever seen a dolphin or a whale ? These animals live in the ocean , but they are not fishes . They are mammals . They do not have ... not fishes . This purple sea star does not have a backbone , so it is not a fish . Does the orca have a backbone? The bones in the dol. Dolphins have a backbone, so they are in this phylum. Frogs have long, strong back legs, with extra joints so they can fold up close to the body. Does have a backbone, eyes, a mouth, and fins. What animals do not have backbones? Answer (1 of 6): Because they have vertebrae. Unlike fish, whales and dolphins evolved from four-legged animals with limbs underneath their bodies, their backbones naturally bend up and down and not side to side. Found insideAsk them to look for similarities: • Do they all have have backbones, ribs, limb bones? and to look for differences, for example, ... Talk about any unexpected similarities,for example, in the limb bones of a dolphin and a human. Found inside – Page 48Correct option is (c) Explanation: Tiger does not have scales on their body while snake, lizard and fish have ... Correct option is (c) Explanation: Dolphin (X) lives in water only while Frog (Y) can live both on land and in water. 4. Play anywhere. The tail of a dolphin has two parts called flukes, and they use them to propel their body through the water, using their pectoral flippers to swim in a given direction. Some examples of vertebrates are mammals, birds, fishes, reptiles, amphibians, etc. Found inside – Page xviAnd correspondingly, in our dolphin, we have a continuous series of high dorsal spines, rising to a maximum about the middle of the ... wide apart from the compression-member, which is as usual represented by the backbone itself. Found inside – Page 461HECTOR'S DOLPHIN New Zealand Unusual markings Hector's dolphin has a small , torpedo - shaped body . The head has a short beak , with no bulge on the forehead . The dorsal fin is short and rounded . The shape is accented by a pattern of ... Bladder. Found inside – Page 59Comprehension (Page 49) Understanding the Text Where did the Tasmanian devil get its name from? The Tasmanian devil was named by the ... Comprehension (Page 54) Understanding the Text How do dolphins find their way around underwater? Lungs. If you look closely, both the human and canine spines have 7 vertebrae in the neck (cervical), humans have 12 (vs 13 in dogs) vertebrae in the mid back (thoracic spine), and 5 (vs 7 in the canine spine) in the lower back (lumbar spine). However, not all species have the same color pattern described above. An earthworm has no bones inside its body nor does it have a casing on the outside like the crab. A human has 24 distinct vertebra in adulthood where a bottlenose dolphin can have up to 65 (Columna). Orcas also contain a melon that is at its prominent forehead and is useful for performing echolocation. Backbone makes your iPhone a serious gaming device. Yes, some species of dolphin do have hair at birth; however the hair falls out once they are born or shortly after birth. It is a spherical organ located in front of the skull, used for echolocation. Found inside – Page 30... A nostril-like hole on the head of a whale or dolphin through which the animal breathes. carnivores (KAHR-neh-vorz) ... Animals that do not have a backbone. Some invertebrates, such as insects and crustaceans, have an exoskeleton. There are no bones in the tail. Dolphins do sleep, but it may not appear that way when you observe them; This is because only one hemisphere of the brain will rest at a time. Once you read these, you'll have everything you need to know about dolphins, and just a bit more. Tails would get in the way when jumping, so frogs do not have one. Their brain is very complex, and research shows it to be more advanced than that of other animals. Only one species of frog has teeth in its lower and upper jaws. Take a Break! Found insideGlossary blowhole—a hole on the top of a dolphin's or porpoise's head that is used for breathing calf—a young dolphin or ... on a dolphin vertebra—one of the small bones that make up the backbone vertebrate—an animal that has a backbone ... Dolphin also has a Backbone micro built either Super Skiff style, or Renegade style. All species have teeth, although the number of teeth varies between species. The trachea is supported by cartilage rings and the bronchioles. It is the only dolphin species like this. Sponges, corals, worms, insects, spiders and crabs are all sub-groups of the invertebrate group - they do not have a backbone. Vertebrates are animals that have a backbone inside their body. It is 15-60 times bigger than the brain of a shark of similar size. Aside from. The jaws are elongated and play a significant role in the sensory system of the dolphin. What animals do not have backbones? It is a protuberance in the lower part of the body only found in adult males. The coloring of dolphins is mainly grayish blue, brownish or black and white. A dolphin's stomach may be chambered, like those of some hoofed mammals. Located in the front area of ​​the head, it has several teeth whose number varies according to the species, but they are around 80-100. Correspondingly, the animals that do not possess a backbone are called invertebrates. What anatomical features characterize a dolphin? Next-level gaming has never been more magical and effortless. The caecilian is not a snake (it is not a reptile) as it has a larval stage which is born in water and it undergoes metamorphosis to become the adult caecilian. A farmer has 19 sheep All but 7 die How many are left? This includes giraffes who have VERY long spines! 5 Dolphin no Mammal! If you are 13 years old when were you born? Their necks can be 6 1/2 feet long, but they're still made up of just seven bones. Yes, some species of dolphin do have hair at birth; however the hair falls out once they are born or shortly after birth. Most tadpoles feed on algae, and have gills. PPSSPP and a Gameboy emulator Delta also are on IOS with the latter being the most optimised for iPhones. Their size can range from one extreme to the next. Found inside – Page 182The role of principal is likewise split, or hybridized, in such contexts. ... One such riddle, the answer for which is “dolphin” and which is titled “Abigail's Animal Riddle,” reads as follows: splash! ... I have a backbone. Dolphins are marine mammals and share several characteristics that are common among most mammals one of which is the presence of hair.. 1. Common dolphins have 75 vertebrae, more than most other mammals. Found inside – Page 12Dolphins live in water and look much like fish. ... The blowhole is for breathing air, just like your nose and mouth. A dolphin cannot breathe underwater. ... Like all mammals, dolphins are warm-blooded and have a backbone. How dolphins communicate and locate prey. Differences in spinal column: Dolphins have about 40 more vertebra than humans. cold-blooded animals. This is called an endoskeleton. Vertebrates are animals with a full skeletal structure. Found inside – Page 9Do you know that some animals do not have backbones and some animals do ! This animal that I am going to tell you about hasn't a backbone . ... The dolphin is a big fish that is about six feet long and is blue in color . http://www.sciencedirect.com/science/article/pii/0361923080902725. It is on the top of the dolphin; they only have one dorsal fin that gives them stability when swimming, preventing them from spinning involuntarily in the water. No scales or gills. Found inside – Page 32juvenile Not yet mature mammal A warm - blooded animal that has a backbone pod A stable unit of dolphins that live ... to survive prey An animal that is hunted and eaten by another animal rostrum The beak - shaped end of a dolphin's ... Hair can often be seen on a dolphins jaw bone or . Their live is not lobed either. Found inside – Page 7Mammals are warm - blooded and have a backbone . Dolphins breathe air through a blowhole on the top of their head . ... blooded having a body temperature that stays the same ; a dolphin's temperature does not change with the weather . Dolphin also has a Backbone micro built either Super Skiff style, or Renegade style. Invertebrates don't have a backbone. There are more than 65,000 species of vertebrates alive today. The skin will peel and flake off for new skin cells to replace the older ones. Hair can often be seen on a dolphins jaw bone or . Some Irrawaddy dolphins kept in captivity have been trained to do spyhopping on command. The lungs of a dolphin are supplied by a short and wide trachea. Read, more elaboration about it is given here. Animals that have a backbone are called vertebrates. Class Mammalia: The class for all mammals. 4 Cownose ray YES The "wings" are its fins. I see lots of mentions of Dolphin, but that is usually the Super Skiff. This coloration is particularly useful for camouflage because if you see a dolphin from above, its dark skin is confused with the ocean floor while when seeing it from below, the color of its belly is similar to the ocean surface, brightened by the sunlight. A dolphin has a three chambered stomach, similar to an ungulate (cow or deer), pointing further to its evolution from a terrestrial ancestor. Unlike humans that do it instinctively, dolphins breathe conscientiously. Dolphins are marine mammals and share several characteristics that are common among most mammals one of which is the presence of hair.. The caecilian is not a snake (it is not a reptile) as it has a larval stage which is born in water and it undergoes metamorphosis to become the adult caecilian. The lower jaw bone of a sperm whale. Found inside – Page 71have fur 493. Many birds love are vertebrates, 497. Mammals meaning A. forests A. they HAVE a backbone. B. homes B. they do NOT HAVE a backbone. ... Ornithorhynchus A. their feet A. Kangaroo B. Dolphin B. their colors is isit? Found inside – Page 465Hemoglobin, containing iron, is red and is found in all vertebrates (animals having a backbone) and a few ... Animal Frequency range heard (Hz) Dolphin 150 to 150,000 Bat 1,000 to 120,000 Do any animals besides people snore? Dolphins do not have vertebrates: they are vertebrates. So, this procedure does not bother a dolphin. There are no bones in the tail. Found inside – Page 30The smallest and most primitive class is the jawless fish ( Agnatha ) , like lampreys and hagfish . They have sucker - like mouths , and smooth , slimy skin . Instead of a backbone , fish in this class have a flexible rod of cartilage ... The skeleton still retains vestiges of a terrestrial life, like a pair of floating bones under the backbone that should have been a pelvis. Hanging from the backbone, up toward the front of the whale, is the rib cage. First of All, Why Does It Have To Be a Fish or a Mammal? Males have two slits that conceal the penis and anus, while the females have only one that contains the vagina and anus, and two mammary slits on both sides of this one. On the other hand, the body of the dolphins is fusiform and hydrodynamic, perfectly adapted to life in the water. Whales have a long backbone (spinal column) that goes from the skull to the tail. They have a bony skull which contains a large, well-developed brain and jawbones with delicate panels in them that function to pick up sound in the water like a "shotgun" microphone in air.
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