Marine Mammals

Aquatic mammals such as whales and dolphins live and feed in the ocean. The Blue Whale is the biggest mammal on Earth.


Thanks to the excesses of narcoterrorist Pablo Escobar, Colombian waterways now house a population of these invasive African giants.

It's the first evidence researchers have of the whales using their "unicorn horns" to capture prey.

Each year, hundreds of healthy whales end up stranded on beaches, and scientists are investigating what could be behind the phenomenon.

Only three mammal species on Earth lose the ability to reproduce during middle age. Killer whales, like us, are one of that select group. But why?

It turns out that one of the world's most enchanting animals has even stronger superpowers than we previously knew. Surprise!

Is it altruism? Revenge? Marine scientists aren't quite sure why humpbacks will sometimes save other animals from killer whales on the hunt.

Orcas have culture, just like humans do. And that culture can influence their evolution.

The current orcas residing at SeaWorld will be the last generation housed there.

If a massive whale washed up on your beachfront, you'd think that the bulk of the problem would be ... well, its bulk. But if you were covered in decomposing whale guts, you'd think differently.

Known as the largest animals in the world, Blue Whales filter some 6 to 7 tons of krill at a time with their baleen plates, "gulping" water and krill, then closing the mouth and forcing the water back out through the baleen.

Covered with silver-white fur, the harp seal can weigh up to 320 and resides in the frigid temperatures and ice floes of the Artic.

Found Antarctic ocean and shores and occasionally along coasts of South America, the Leopard Seal can grow up to 12 feet and weigh as much as 990 pounds.

With only about three hundred to six hundred remaining, Northern Right Whales can weigh up to 180,000 pounds and are likely to be spotted in coastal waters.

Found in all major oceans of the world, the Striped Dolphin, belongs to the Balaenopteridae and feeds on Krill, other planktonic species is and small fish.

In this comprehensive guide to mammals, you will learn about the Walrus including it's diet, behavior and much more.

In this guide to the West Indian Manatee, you'll learn cool facts about its habitat, unique behaviors and it's converstation status.

Whether you're sleeping on a water bed or napping during a rainstorm, water has a calming effect. Walruses also make use of soothing waves, but why don't they drown when catching submerged shut-eye?

If you don't make it past that first "E" during your annual vision test, you might give bats a reprieve by calling yourself "blind as a manatee."

Vindictive whales like Moby Dick sometimes give these giants of the sea a bad rap. But whales do a lot for their ecosystem, especially after they go to Davy Jones' locker.

What? You've never heard of a narwhal? Well, it's a cold-water-dwelling, deep-diving, vocalizing, halibut-munching wonder with its very own ivory crown. Did we mention its crazy tusk?

Dog shows aren't the only places you'll hear barking and clapping. Seals and sea lions welcome beachgoers with their uproarious get-togethers. But how do you tell the difference between the two?

Dolphins and war? That seems like an unfortunate pairing. But the U.S. Navy has been training the gregarious sea creatures to spot sea mines since the 1960s. Are they good at it?

Some people call orcas the wolves of the sea, yet others want to swim with them. Why are these animals known as killers -- or are they just getting a bad rap?

Bushy mustaches like the ones that Magnum P.I. or Super Mario sport are a bold fashion statement. But for baleen whales, they never go out of style.

Did you know that there are 37 species of dolphin? This dolphin image gallery depicts and handful of these species, including the bottlenose, dusty, false killer whale dolphin and more.