Aquatic Mammals

The reason whales die rather quickly when they're stranded on a beach is two things. First, their bones are lightweight and porous, much lighter than the bones of land animals. this is because, in the water, the bones don't have to provide the kind of support that ours do on land, so they've evolved more as places for muscles to attach to than for actual support. On land (away from the buoyant water where gravity isn't a big factor), the whale literally crushes itself under its own weight. Second, they overheat. Most whales are designed to live in cold water, which takes heat out of a body some 20 times faster than air does. Their fat (blubber) insulates them very well in the water. On land, however, they dont have the cooling of the water, and the blubber makes them overheat. Dead whales literally cook inside, since after death the thermoregulatory mechanisms that normally cool the animal are shut down, and decomposition sets in, inside what is essentially a big pressure cooker (the body).

Doplphins are mammals. They breathe through lungs and have hair on their body for at some of their live. They also have internal fertilization.

There are a few societies dedacated to saving the Harp Seals, like harpseals.org which is volentary, and it's goal is to permanantly end the annual Canadian Seal Hunt (which kills 95% of Harp Seals which are just days or weeks old) It informs you on how you can help. You can donate here. These donation help them... * Air their 30 second TV commercials. * Running print ads to promote the Canadian seafood boycott. * Displaying huge billboards on major arteries. * Running Radiocommercials. * Setting up information booths at festivals and fairs. * Printing and Distributing leaflets, flyers, and Action Cards for free to activists and many other ways you can help. http://www.hsus.org/protect_seals.html also allows you to sign a pledge, in which you put in a bit of details. http://www.ifaw.org/ifaw/general/default.aspx?oid=22126 is also a good one to go to, where you can sign a pledge and get regular updates. All have heart-breaking videos, which I'm sure would tug at any humane human's heart.

Yes! They are vestigial (not serving a purpose biologically), and are remnant from a time when early early ancestors of whales were land based animals.

Scientists find a new species of sea sponge each day

2 in a half

niche how organisms get what they need in order to survive. a right whale's niche is putting them in danger. because they live near the coasts, and they are surface feeders (food for survival) they are very easy targets.

that is my answer but i don't know anything more

The Hippopotamus is the 3rd largest mammal.

Manatees sleep at the bottom of the ocean floor for a few hours.

The longest whale song to ever be recorded lasted for 42 hours and 12 minutes (37 secons to be precise). I don't know where it was recorded though.

Add me on moshi monsters- I am whaleloverxxx

BTW i'm 13 because there has been some confusion on how old I a and should I be on moshi monsters if I'm over 16 or something like that.

They just go, relax a spincther and push a little. The current takes care of the rest.

The researchers are trying to see how many there are, but won't give us an estimate. But they do think the manatee populaton is increasing.

sloth

Orcinus Orcas bodys are in the shape of a barrel or cask.

Dolphins are usually in pods and are not too commonly seen alone. They have strength in numbers. Also, dolphins are a strong species and are rarely hunted by natural predators so humans are their main threat. Dolphins are a friendly species and don't generally bite so they are not able to strongly protect themselves against humans but they are very fast creatures, which also helps.

Its favorite food is "Krill". An Adult blue whale can kill upto 40 million krill per day. They can eat nearly 3500 kilograms of krill in a single day. They need nearly 1.5 million kilocalories of energy per day and so, they nearly eat nonstop. Small fish, crustaceans and squids too get caught when they trap krill in their mouth.

The Tundra / Arctic

Seals eat fish. If sardines are where a seal could get them, they would- but would rather have larger fish.

a baby seal is called a pup

You may be confusing "heart" with "stomach." No mammal has more than one heart. Several animals have more than one stomach, or multi-chambered stomachs. These are called ruminants. a Ruminants are mammals in the order Artiodactyla. They predigest their food in the first stomach, regurgitate it, re-chew it (it is called cud now) and re-swallow it.

yes only some seals not all off them

two narwhals get in a fight until one rips the horn off the other and uses it to have butt sex with the other and then impregnating them

• yes,some do