why  do dolphins or whale suicide?
97024
Mmmm..I wonder why. Last week thousands of squids died in a beach next to my locaction, and a samll whale died this week also.\nWe have La Niña phenomenon here (south Pacific...very very south), means a rise in the avarage temperature of the sea. Maybe with that temperature some bacterias or viruses begin to multiply and they affect the behaviour of animals.\nMaybe there are changes in magnetic fields that affect their orientation.
1097948
OK, long story here.\n\nI used to raise pigs for 4H, and we had a boar that we used to breed the females. One day when I was out feeding, his "cork screw" came out of his sheath, and he started humping the air. No females were present so I have no idea what was going on besides masturbation, and yes he did ejaculate. I remeber it like it was yesterday... I have been scarred for life.\n\nActually haider, dolphins also have sex for pleasure, and some pymie monkeys do it as a way to greet/recognize each other.... discovery channel.
467532
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.
527030
The ocean water can get too hot and kill the animals that live in it because deadly algae and other things grow and kill dolphins and whales etc. Then fish will die and the food chain can go off wack and everything can get messed up and hurt the  animals.
1015287
.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
963358
Bottlenose Dolphins are not the cute, nice mammals we were led to believe...theay are actually quite nasty. Males hold females captive for days at a time to inhibit her from mating with other dolphins, leading her to finally relenting and mating with her captor. Males have also been known to kill young to induce more mating.
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.
804709
All marine mammals (whales, dolphins) have vestigial rear limbs (small pelvic bones) and they also have remnants of clavicles (collar bones). Therefore, the captured dolphin would represent a "mutation" whereby the bones had greater growth than normal, much like humans can have abnormal growth of the coccyx, looking similar to a tail. \nRemember - with evolution, once you lose something, you can't get it back ,so there isnt any way that you could get "reverse" evolution. Darwin wouldn't be "proud". Darwin would be more happy to think that he was no longer being ridiculed for his findings and that scientists were investigating our natural world rather than just assuming everything happened through divine intervention. Darwin would think this dolphin to be an interesting mutation and further provide evidence of the evolution of mammals. Evolution has no motive, it just happens due to natural selection and selective pressures, so Darwin would not think that something is being achieved by this and would simply see it for what it is.
753941
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.
247103
Dolphins are mammals just like us, and so like us they also sexually reproduce.  The male dolphin inserts his penis into the female dolphins vagina where he releases his sperm and so fertilizes the egg.  They kind of float/swim belly to belly.  Their genitals are located on the underside somewhere near the tail.
100057
Dolphins represents knowledge.  And if you a colleting them, you have a strong desire to achieve knowledge!!!!  is that correct in your case!!!!???
42157
I've only found one reference to this behavior, and the original publication is in Russian. Orcas are social mammals and it would take extremely stressful circumstances for cannibalism to occur.
518390
This is the traditional answer:\n\nSometimes whales are already dead when they become stranded on a beach. When a whale dies, it often tends to float up to the surface after a few days. The carcass is then transported by currents and tides and can come ashore on a beach.\n\nSometimes whales are still alive when they become stranded, most often when they are in groups. Several hypotheses have been put forward to explain these strandings that likely have multible causes. The whales could be sick or injured. Their sense of orientation can be affected by sickness or parasites. It is believed that whales use terrestrial magnetic field and coastal topography for orientation purposes. Thus, a disturbance of these magnetic fields or odd topography could lead to navigational errors. Typically, whales that are put back in the water return to shore and strand anew on the same beach. Their reference system may erroneously tell them that deeper water lies in this direction. Stranding of live animals often happen in the same place, in areas with specific characteristics. Pelagic species that are used to great oceanic depths may be caught by the tide in shallow estuaries. In the case of mass strandings, whales may be following a disoriented leader, or they could be swimming towards an animal that has already stranded and is emitting a distress call. In short, stranding remains a somewhat mysterious phenomenon. \n\nBut the last line of this paragraph tells you the truth...they really do not have a clue.
944073
Because of the motor boats. The fans of motor boats cut the manatees, and they died from the injuries.
891575
I agree entirely. How many whales do they need to kill to do this research anyway? Whales are becoming endangered and it would be very sad to lose them. To take action, there are lots of petitios against this behavior through http://www.care2.com. Togethere we can make a difference!
462727
Porpoises (I assume you mean small cetaceans) hunt their food with natural sonar (like bats), and it's sensitive enough for them to distinguish between healthy fish and sick fish (or, presumably, dead fish). So they're not likely to go for a baited hook.\n\nBut the question is, why would you want to catch them?
292810
they let Japan keep killing whales because they know whales have no power to go to the court. they will die if they do.