Researchers witness strange sea animals, including poisonous sea pigs and hand-sized sea spiders, while sailing to the Denman ...

A colossal squid was filmed for the first time in its natural habitat near the South Sandwich Islands during a recent ...

Scientists on an icebreaker ship have captured a number of weird and wacky animals from Antarctica's ocean floor, including a ...

Hordes of bright blue, jellyfish-like sea creatures are washing up on beaches across California. As of Monday, thousands of the critters — called velella velella or by-the-wind sailors — have been ...

Nope, it's not your imagination! The ocean is actually getting greener, according to scientists, and we found out why.

Documentary filmmaker Jeremy Corbell spoke with NBC News' Gadi Schwartz about a new video of an unidentified tic tac object possibly recorded by a Navy ship near the California coast in 2023.

Marine flatworms are among the ocean’s most unique, albeit strange, organisms. Their undulating movements make them look like silk sheets underwater. Marine flatworms are skittish but are not uncommon ...

Strandings of these jellyfish-like animals, sometimes called "by-the-wind sailors," usually mean spring is coming ...

What?” out loud. This year is no exception, as we saw some strange April Fool’s Day pranks, sure to leave you scratching your head. Are those Gen Z kids mogging your mewing streak, with their lingo?

It’s evident that summer is around the corner, as thousands of tiny sea creatures reminiscent of crispy potato chips have reappeared across the California coastline. The jellyfishlike ...

Their nervous systems may not function like a human brain, but they allow these creatures to perform remarkable feats that often seem alien to us. From problem-solving octopuses to bizarre sea ...