Why it's awesome: Earth's oceans are home to many secretive and unusual creatures that humans rarely see — including giant ...

Pacific sea nettle The brilliantly named Pacific sea nettle is a red-tinted jellyfish that lives in the northeastern Pacific Ocean. Taking its name from its sting, which is not unlike the effect ...

That makes them difficult to study. Deep-sea jellyfish tend to turn to gelatinous goo when captured in nets. Because of that, we have to rely on remote-controlled submarines to get a closer look ...

Regular sea swimmers know that when the sea is getting warmer, it means a return of jellyfish like the Lion's Mane Global sea surface temperatures for April and May were the highest on record for ...