During a dive off Argentina, scientists documented a rare jellyfish discovered a little over a century ago and seldom seen since, as well as the fish that keep it company.

Miami-based global cruise company Royal Caribbean plans to build a massive water park private destination in Mahahual, a small town on Mexico’s coast, creating deep divisions within the community.

Photographers capture mutant crayfish, cleaning fish, and synchronized whales in this year's top underwater contests.

Two female jaguars were recorded making meow-like vocalizations in Brazil—the first documented audio of the sounds in the wild ...

This jaw-dropping shark is pink, nightmarishly ugly and can slingshot its jaw out of its face when it’s hungry ...

From Mantua, Italy to Philadelphia, USA, here’s a curated collection of destinations that matter - and why now is the time to go.