See some of the most unusual and noteworthy discoveries.
A kinky fish and a cartwheeling spider are just two of the recently named top 10 new species for 2015.
Skin is the biggest and heaviest organ, and for these 10 animals, it holds super powers beyond the norm.
Some animals are warm-blooded, while others are cold-blooded. What sets them apart, and what advantages does each kind have over the other?
A big round fish that some have likened to a swimming flat beach ball has just been identified as the first known fully warm-blooded fish.
All but two fish from three exhibits perish in what is likely a reaction to a medicine commonly used to fight parasites.
Workers at a Tokyo aquarium are scratching their heads after the deaths of dozens of fish have left just one lonely tuna roaming a once-bustling tank.
The finding could shed light on how animals with backbones first invaded land, researchers say.
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