The coelacanth is the most famous living fossil. It was once thought to be a missing link between fishes and amphibians because of its leg-like lobed fins. Small populations live in the Indian Ocean ...

Newborn fish are mistaking tiny bits of trash for food. If they die, there’ll be fewer big fish—and that could rattle the food chain. marine-plastic-ocean-fish-microplasticThe naturally oily ...

A rare ocean sunfish has washed up on a beach in Oregon. But even at five feet long, the animal is still “relatively small” compared to other members of its species. That’s according to the ...

But have you ever wondered what plants and animals live in the ocean and how they survive underwater? Well, pack your swimsuit, we're off to find out! Look at all these fish! Big fish! Small fish!