The chain catshark may look like any other shark in daylight, but under blue light, its skin glows neon green. Here’s a breakdown of this remarkable adaptation.

Sharks might not be a natural biological group, with most species potentially closer kin to rays than to an oddball group of sharks.

Everyone knows that reality shows are manipulatively edited to create the most interesting narrative, but the Discovery Channel would never lie to you, right? Sadly, they have, on both their reality ...

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