Bluestreak cleaner wrasses are entrepreneurial fish. This tiny, shiny species sets up shop in coral reefs, where it eats parasites off of client fish, some of them big and hungry. It's a dangerous ...

Pick a social media platform and a fishing-related hashtag, say #patroutfishing on Instagram. It’ll turn up thousands upon thousands of posts. Anglers have long posed for photos with their latest and ...

The sea can be a dark and scary place, where survival often depends on not being alone. In the vast, open water, fish rarely swim solo. Instead, they aggregate into schools or shoals as a strategy to ...