A marine mammal hospital has rescued a record number of stranded animals in 2015, prompting concerns about the health of fragile marine ecosystems.
The rarely seen, tiny creatures float upside down and aren't afraid to go up against the venomous Portuguese man o' war.
The animal needed some help with its overgrown pearly whites.
The animal has a shell made of overlapping plates, allowing it to roll up in defense if a predator pries it from the tidal-zone rock it calls home.
Scientists work out an enduring mystery about how some fish can seem to disappear.
An Eastern Pacific green sea turtle seems to have strayed far from home.
Complex animal life may have begun some 9 million years earlier than previously thought.
Although it may look like a whimsical cartoon character, the axolotl is in serious trouble.
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