Remarkably diverse communities of ocean life make their home in waters near Mexico's Revillagigedo Islands, now a protected marine reserve.
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Mexico President Nieto designated a Pacific Ocean region teeming with biodiversity as a protected marine area.
Hundreds of hungry polar bears were treated to a whale of a buffet last week when the carnivores descended on a whale carcass on the coast of Russia's Wrangel Island.
The graceful whale swims by undulating its wide tail up and down, while the shark swims by moving its tail side to side. Why the difference?
A deadly gang of orcas roving off the coast of northern California is meeting surprising opposition – humpback whales trying to foil their kills.
A newborn humpback whale learns early in life to use its "indoor voice" to avoid attracting the attention of nearby killer whales.
In 1977, the Explorers Club received an odd gift. Unable to attend a whaling exhibition, a couple sent a regrets note and a sperm whale foreskin, mounted and stuffed.
A humpback whale that stranded on a sandbar in Long Island's Moriches Bay on Nov. 20 was euthanized on Wednesday (Nov. 23), after attempts to move the animal into deeper waters were unsuccessful.
All mammals nourish their young with milk, but fat content is one aspect of mothers' milk that can differ greatly from species to species.
The enormous blue whale at the American Museum of Natural History is clean as a whistle following its annual vacuuming.