Dolphins and Porpoises

35

Yes, usually when a dolphin spots a person drowning or having hard time swimming they swim up and save them to a nearby shore.

ovis aries

Because its got fins and a tail and not arms and legs which meens the only way to get the net off if it is by itself it has to roll about and if it rolls about to much it could get even more stuck.

they are giving them homes stopping people from hunting them and protesting about dolphins there you go jimmy you happy?

A porpoise does indeed have an internal skeleton inside of them. The porpoise skeleton is anywhere from 4.6 to 6.2 feet in length and consist of rib bones, a backbone and upper vertebrea.

The common dolphin (Delphinus delphis) is not on the Endangered Species List and is not considered a threatened species. They are frequently seen off Southern California, sometimes by the hundreds.

Common dolphins don't have any natural enemies, quite possibly because they wiped them all out long ago. Most people think these small dolphins are relatively harmless, and they couldn't be more wrong. Dolphins are probably as friendly as they are because they can afford to be. All a dolphin has to do to kill you is point its head at you and whistle a certain way, and you die from a sound so intense it can literally tear your cells apart.

These dolphins navigate by echolocation, sending out sound in a 10 degree cone and listening for echos. But by tensing some very fine muscles surrounding an oil-filled gland in its head called a melon, a dolphin can change the focus of that sound so that it comes together at a single point, just like sunlight through a magnifying glass. All of the toothed whales (Odonticetes) have this weapon, but they are so restrained in their use of it that we didn't even suspect its existence until 1937, and we didn't have proof that it existed until the late 1980s.

The Pacific whitesided dolphin's biggest winter adaptation is that it migrates to California during this time.

One can find pictures of cartoon dolphins in books about dolphins which can be found at a local library. One can also find many pictures of dolphins online by looking for sites related to dolphins.

This dolphin is also know as the Pink Dolphin, Amazon River Dolphin and "Bufeo" in Peru. There are many reason this animals is suffering this threat. The main thing is man, and the development that has been brought to the area of the Pink Dolphin's habitat. At one time the native people of the area respected and didn't kill the Pink Dolphin, but with industry and development of the area, new ideas about the environment have been practiced for years now. The Pink Dolphin lost it's reverred status and was hunted for it's skin and fat. Now, it is mainly the gill nets that are killing many dolphins. They have no natural predators, but man. The commerical fishing gear and techinques, such as trawling, gill nets and fishing lines, kill unknown numbers, making conservation efforts truly difficult.

Doplhins live in open waters, no place to hide. But there is protection from the rest of the pod.

These birds pirate their food from others. They will follow and harass birds such as gannets, shearwaters and albatross to force them to disgorge their food which the skua then eats.
Skuas are seabirds in the family Stercorariidae.

Dolphins are not prokartiotic because a prokaryote is a single celled organizism. That means dolphins would be eukaryotic.

Yes. The vast majority of species that have ever existed are extinct, and there's no reason to suppose that dolphins will escape this eventual fate. (It's just slightly possible that they might survive if humans do, because we kind of like dolphins, and if we escape to the stars we might take a few with us.)

Females are seasonally polyestrous and spontaneous ovulators, generally ovulating between two and seven times per year with an average cycle length of thirty days. see http://www.dolphin-institute.org/resource_guide/nathistandecol.htm

shrimp is their favourite food

0. No dolphins live on land.

Depends on where you live and who you are. If you live in any first-world country, you can only "own" a dolphin if you are the owner of an oceanarium that has the certified license and certificate.

The biotic or living features of a dolphin are the fish, seewead and plankton. THis is because they are living things that surround the dolphin and are involved in its daily life.

Dolphins live in every ocean.

Yes, and so are seals.

Sharks breathe with gills, just like any other fish.

Dolphins are mammals, they breathe with lungs. They can't breathe under water. But they're really good at holding their breath, so they only need to surface every few minutes for a new breath.

The colours that are on the mood dolphin change when your feelings change.

This question can technically not be answered. an organism can not be parasitism commensalism or mutualism because these are all interactions between two organisms, not an organism by itself. So, it really depends on what it is interacting with and how. Parasitism is a relationship between two organisms where one is negatively affected and the other is benefited. Ticks, tapeworms and lice on/in dogs or humans are among these. Commensalism is where one species is benefited and one is not affected at all. One example is woodpeckers and some species of owls. The owls will make homes and reside in the holes in trees result of some species of woodpeckers. Mutualism is a relationship where both species mutually benefit. One instance is the honey badger and honey guide. The honey guide is a bird and the honey badger is, well, a badger and both of these organisms feed on honey. The honey guide will find a hive then a badger and lead the badger to the hive. The honey badger will then break open the hive and feed on the honey. the honey badger has thick skin and will not be harmed by bee stings. The honey guide will then feed on the leftovers.