A curious, colossal, cow-sized sunfish circled an Oregon boat and rose to be touched. Roughly 7 feet, 1,000+ lbs. Watch the video.

Colorful tropical fish are heading south along the WA coast, including around Rottnest. This sounds spectacular, but it's not.

You know how it is, you’re on an overseas trip to the Caribbean with your university that your mum and dad have re-mortgaged to pay for, the teachers say you can go for a little snorkel because you’ve ...

Male and female whale sharks - filter-feeding marine behemoths - grow at different rates, with females doing so more slowly but getting much larger than the guys, according to research that offers ...

Scientists using new ways to eavesdrop on fish have captured a cacophony of thumps, honks, burps and grunts in underwater recordings.

When saltwater fish long ago evolved to live in fresh water, many of them also evolved a more sophisticated hearing system, ...

With each flick of its fins, it leaves behind a glowing neon trail that feels like an artist sketching light across the water ...

Australia is known for its many beautiful beaches, but I prefer swimming in our popular ocean pools. These saltwater pools ...

Meet some of the most bizarre animals you've ever seen. You'd think they came from another planet, but they're just really ...

The ocean is home to many amazing creatures, and jellyfish are some of the most interesting. They look soft, flowing, and ...

A shark was spotted gliding through a flooded parking lot near the Boynton Beach Inlet Friday, as heavy rains and a King Tide ...

Wild fish are born with instincts that guide their swimming, but what would it mean to “teach” them? This deep dive explores natural behavior, survival skills, and the fascinating science behind how ...