Learn about some of the some of the most bizzare marine life under the sea, such as Sea Squirts, sponges and even Sea Monkeys.
These two sea creatures can be easy to confuse. But they're actually quite different. We talked to experts to find out how to tell them apart.
What lives in water, has no gills, scales or fins and is not a fish? Yep, a starfish — which is why marine biologists have renamed these creatures sea stars.
A bright pink manta ray named Inspector Clouseau is causing a splash on the runway of the Great Barrier Reef.
Dwindling natural habitats are causing a significant decline in certain seahorse species. To bolster populations, researchers in Australia are building seahorse hotels and leaving the lights on.
What sea creature looks like a spiny pincushion and is considered a delicacy to gastronomes around the world? Yep, the sea urchin.
Is that a dolphin pancreas? Some extremely firm manatee vomit? Nope, it's sea pork!
The single-celled Mesodinium chamaeleon harnesses algae, which lives inside it, for energy.
The Dumbo octopus is just one of the amazing creatures filmed by the most recent voyage of the E/V Nautilus.
The kindest thing you can say about a sea cucumber's physique is that it looks very much like a large hoagie bun dressed in a lumpy old sweater.
You can't tell a book by its cover, and you can't tell a squid by its Nosferatu getup.
Sea spiders don't do anything by the book, and researchers have just gotten to the bottom of how they breathe.
By incorporating algae into their bodies, these beautiful sea slugs become one of the few animals with the photosynthetic ability of a plant.
Crocodiles are known to eat just about anything. But sharks? A scientific team found evidence that they've chowed down on those predators too.
The magnificent bryozoan is a colonial organism that lives in warm ponds and lakes usually east of the Mississippi River. So what's it doing in western Canada?
If you thought this underwater creeper looked heartless, you're actually not that far off.
How squid brains process their external visual skin communication is fascinating, complex, and unlike anything in the vertebrate world.
It's not easy being a starfish larva. Fortunately, the tiny creatures have an efficient way to get food and swim away.
It sounds crazy, but it's happened before, and it'll probably happen again.
New fossil analysis details a microscopic organism from 540 million years ago that just might be a precursor to every vertebrate on the planet.
The mysterious red fish, discovered and identified in 2015 and related to the seahorse, has finally been spotted alive in waters off Australia's coastline.
Turns out that strange sound may be minke whales getting vocal in the deep ocean.
Western Australia Museum is hosting a naming contest for this fascinating new nudibranch species.
And that price is a tapeworm infection.
Whether they're busting open a child-proof medicine bottle or prying apart Mr. Potato Head, octopuses have some crazy brains. Actually, they have nine of them.
The Mariana Trench is the deepest place on Earth, and we're still in the dark about much of the life that calls it home. Here are just a few of the trench's eye-popping residents.