how do whales move through the water?
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Whales evolved from terrestrial four-legged hoofed animals. They've acquired hydrodynamic fusiform bodies, including tail flukes (horizontal, in contrast to the tailfin of fishes, and without internal support), dorsal fins (more or less developed, or absent); their forelimbs are flippers and their hindlimbs are extremely reduced and within their trunks. They've lost all external structures that could offer resistance to the waterflow, such as external ears, hair, or external genitalia, and thus have a smooth body surface. This is important in order to keep a laminar flow of water around the body (turbulent water does not provide lift).\nIn addition to their hydrodynamic shape, they have a well-developed layer of fat (blubber) that provides both insulation and some buoyancy. They move basically by undulations of the caudal vertebral column that move the tail up and down.
674318
I've seen a killer whale attack a juvenile grey whale in the Monterey Bay.  But I don't  think it was because they were Hungy\n\nIn Argentina I saw them beach them selve's going after sea lions.  But I think its mostly for sport.  they would take about 2000 ft from the shoreline and toss them like Volley balls in the air.  They are really cool creatures.
173259
It is a whale, I think it's a Blue Wheal. It is the largest and many times larger than an elephant, so just to move it's own weight it must me the strongest. It is a animal and not a fish.
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YOUR LEGS SHOULD STAY TOGETHER AND MOVE IN THE MOTION OF A DOLPHIN. ARMS START OUT IN THE FRONT OF YOU TOGETHER PUSH DOWN WITH HANDS AS YOU ARE MAKING A YOUR ARMS BUTTERFLIED OUT OF WATER OVER HEAD AND PUSH WATER DOWN HEAD COMES EVER OTHER STROKE FOR BREATHE BODY SHOULD HAVE SMOOTH MOVE EVERYTHING WORKS TOGETHER VERY HARD TO DESCRIBE IN WORDS EASIER TO SHOW
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The same way it travels through air, in waves.  It just doesn't make it very far.
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.WHALES AND DOLPHINS:\n\nWhales and Dolphins are marine animals. They live in oceans around the world. Whales and Dolphins come from the same family, CETACEA (sey-tay-sha) . They both breath from a blowhole located at the top of their head. Whales and dolpins are mammals. They are mammals because they have lungs not gills,they have hair not scales , and they also have give live birth and don't lay eggs. There are only about 80 kinds of whales and dolphins that we know of right now.\n\nWHALES:\nWhales are very large animals. They can grow up to 100 ft. or more in length. They can weigh up to 200 tons or more. Whales live in families called pods. These pods vary in numbers and consist of family members and family friends. Whales live in these families their whole life. Group living is safer when other whales or sharks attack. It also makes it easier to find food. Whales are always migrating. They travel to find food, breed and have young.\nWhales do not have eyelids. They rely on thick oily tears to protect their eyes. Whales hear from little holes behind their eyes.\n\nWhales talk to each other by making high pitched sounds like whistles, clicks, squeaks, rattles, and groans.\n\nTo help protect the whales from extinction please DO NOT throw nets, fishing lures, or other fishing gear ocean\n\nDOLPHINS:\nDolphins live with the whales in the oceans. But dolphins come much closer to the shore. They will come as close to the shore as you or I can walk without going under water. Dolphins have teeth.\nLooking at a dolphin you would not think it as a nose, but surprise...it does! They have nostrils called blowholes. Over millions of years of evoloution whales and dolphins nostrils moved to the top of their head. This allows them to breath by surfacing instead of them sticking their whole head out of the water.\nThe first thing a newborn dolphin must do is to go to the surface to breathe. But the baby can not swim so its mother and a another dolphin will help push the baby to the surface for its first breath of air. The baby will be able to swim in about 30 min.\nDolphins are fast swimmers. When a speeding boat passes the bottlenose dolphin, it will start to race out in front . They will take off hitting the water and keep going.\nDolphins navigate by following the hills and mountains of the ocean floor, by tracking the sun, by sensing currents, and by tasting the water along the journey.\nA dolphin's sound probably originated in its nasal passages. These nasal passages are located on the top of the head. Dolphins can make sounds to see what lies ahead. This sense is called echolocations. The dolphins' sound waves hit an object and the echo bounces back. Echolocation sounds are called sprays. Sprays are so strong they can stun another whale. Dolphins don't "point" their melons at any other sealife except their enemies.\n\nSHARKS:\nOut of all the species walking, flying, slithering or swimming, there aren't many who have been around as long, survived as well, or come in so many shapes and kinds as the shark. The earliest evidences of sharks are isolated spines, teeth and scales that appeared about 430 million years ago in the Silurian Period, known as the "Age of Fishes". Sharks have a sleek, streamlined design which helps them swim without using up a lot of energy.They certainly need to conserve their energy because they never really sleep and most of them never stop swimming.\n\nSome sharks are fierce predators, and would be happy to eat you if they encountered you. Almost any shark six feet or longer is a potential danger, but three species have been identified repeatedly in attacks: the Great White Shark, the Tiger Shark and the Bull Shark . All three live world wide, reach large sizes and eat large prey such as marine mammals or sea turtles. But most sharks never grow longer than five feet and never even see anyone with legs and arms anyway. People kill thousands more sharks every year than sh
865523
All fish swim with their mouths open at least a little. This is a big part of how water gets to their gills so they can take in oxygen and get rid of carbon dioxide.
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They are mammals, so they have lungs and can not absorb enough oxygen to survive.  Dolphins evolve from a land animal that return to the sea.  There is a belief that dolphins can absorb oxygen from the sea, but because they are warm blooded, they require large amount of oxygen, which sea water can't provide. Many warm blooded animals evolve to become sea creature, because of the abundents of food.  Warm blooded animals are smarter and in some ways faster than cold water animals, gave an incentive for some species to become sea creatures.  Warm blooded animals though require large quantity of oxygen to run its supercharged matabolism, which why fish never evolve into being warm blooded.
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They adapt to the water around them.
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some whales mate on their sides at the surface and roll over periodically; as far as breathing goes, even if they werent at the surface, they can hold their breaths for pretty long periods of time. certain whales have also been known to mate in groups, but im not personally sure how this works..\n\nanyway, most whale sex is underwater actually and pretty quick, and no they dont get stuck.\n\nif you are really looking for details, here is a good quick site:\nhttp://whale.wheelock.edu/archives/ask00/0221.html
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Guppies don't really hear... And if they did, it wouldn't be by their gills. They use their gills to breathe. Instead, they follow vibrations. I'm not quite sure how, but I think they have a sense organ that detects vibrations in the water.
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Researchers say that dolphins, along with whales and porpoises, are descendants of land-living mammals, most likely of the Artiodactyl order. Modern dolphin skeletons have two small rod shaped pelvic bones thought to be left-over hind legs. They entered the water roughly 50 million years ago.
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Killer Whales are very complicated creature and our biologist and scientist are yet to understand it fully.\n\nThis is Dolphin family.\n\nWhen a group, it is very ferocious to all the water species that includes even Sharks and some times Blue Whales.\n\nIt marches in the sea in a group of about 40 Killer Whales called school of Whales. During that time, it tarments and kills all who come across or confront with it.\n\nThe biggest strength of Killer Whales are its speed and acrobatic swimming skills.\n\nAs for as the defence machanism is concern, it can easily escape from any velunarable situation by its speed.\n\nIt is a friendly species of human being. There is no data that a Killer whale attacked a human being.
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No animals in the ocean cannot be struck by lightening generally speaking because the creatures are not on the surface of the water like a boat. When the lightening hits the water, it's energy is discharged on the surface, not below the surface.
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Many whales live in colder waters and need the layer of fat to keep their body temperature constant.
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Some of them are buoyant and sleep floating on the surface breathing air. Others can do what in humans is comparable to the "dead man's float" where you are under the water motionless then tilt your head back only, rise to the surface to breathe, tilt it back and resubmerge. Hippos can do this without ever waking up so I assume some marine mammals can too.
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Dolphins live in a tribe.There can be up to 150 dolphins in each tribe.The mother is the centre of the family.\n\nWhen hunting they use a method called "Kettle technique".\nThey manage to gather the fish together into a ball shape by letting out piercing cries and by surrounding them with bubbles. In this way it is very easy to catch them.\n\norcas work in co-operation with one another, swimming in unison to create a wave pattern in an attempt to knock the seals off of the ice. This clever hunting technique quickly and efficiently could provide dinner for a pod of orcas.\n\nI once read about a incident where the orcas followed a young blue whale and its mother for 4 days and when it got exhausted they had eaten it.The mother was too big for them and they could possibly not harm it.