'Thousands and thousands' of these curious creatures have been showing up on the Texas shoreline, expert says. What are they?

Few have explored the ocean’s deepest depths – but those rare few have shared images of the strangest, most mysterious ...

Deep-sea creatures adapt to darkness and pressure with bizarre, often bioluminescent features.

Strange creature "was as good as dead" until this beachcomber stumbled across it.

The “Bloop” sound had people convinced something huge was hunting in the ocean — like a real-life sea monster hiding in the ...

The bumphead sunfish (Mola alexandrini) is one of the strangest and most impressive giants in the ocean. Bumphead sunfish, ...

'Our marine monitoring team calls them seagrass doughnuts – they’re spectacular,' an expert said.

For much of his life, Patrick Webster has slipped into a wetsuit, strapped on his elaborate camera system and dove into the ...

Scientists from the California Academy of Sciences described 72 new species last year, from elegant birds to strange sea ...

The natural world is full of animals that seem to defy logic, blurring the line between reality and imagination. Some look like they were made from spare parts, while others behave in ways so unusual ...

A rapid climate collapse during the Late Ordovician Mass Extinction devastated ocean life and reshuffled Earth’s ecosystems.

“A rare Mola mola (ocean sunfish) washed up on our shore at Cardiff State Beach today,” San Diego State Lifeguards stated Wednesday via Instagram. “It’s the heaviest bony fish on earth and can weigh ...