Sea Urchin Fertility Video -- National Geographic

Sea Urchin Fertility Video Now that's a busy mother. A female sea urchin produces 500 million eggs in her lifetime.Welcome to the National Geographic video player.Video Sections

Animals Video - All the beauty and excitement of the animal kingdom comes to you in thrilling footage of lions, sharks, squid and more.

Invertebrates >> Other Invertebrates - The strangest sights of the deep come to the surface in these bizarre and fascinating videos.
- Carrier Crab - A carrier crab uses a sea urchin's spines for a shield from predators.
- Clams: Not Just for Chowder - They have no brain, but clams burrow deep in the mud to avoid predators such as the cow-nosed ray.
- Clownfish and Sea Anemone Partnership - Clownfish have evolved an ingenious though slimy way to use stinging anemones for their own protection.
- Coral Reef Spawning - A tropical setting in the Caribbean is where sperm and eggs meet to form these coral reefs.
- Hairy Sea Cucumber - No, it's not a new appetizer, nor a new music group. But the hairy sea cucumber does put on a show worth the price of admission!
- Jelly Plankton - You might just miss them if you're not looking closely, but when they get together, a variety of jelly plankton make for one of the most luminous displays in the ocean.
- Monsters of the Deep - Find out if sailors' tales of killer clams are really true.
- Moochers of the Caribbean - The medusa fish knows a good catch when it sees one—and helps itself to a cauliflower jellyfish's leftovers!
- Nudibranch - Choose your poison. The nudibranch sea slug devours a man-of-war's stinging cells, then uses them for its own defense!
- Plumed Worm - Plumed birds, yeah. Plumed serpents, sure. But who ever heard of this sea creature—the plumed worm?
- Poison in a Cone - Snails would seem fairly docile creatures. But the cone snail's sting packs quite a wallop.
- Portuguese Man-of-War - Just a squishy, gelatinous mass? Not quite! Woe to the sea creature that gets entangled in a man-of-war's 50-foot (15.2-meter) tentacles.
- Sea Angels - Ethereal, otherworldly, translucent sea angels seem to hover through the cold waters of the Arctic Ocean. Hard to believe they're related to snails!
- Sea Salps - We're all connected. Four-inch (10.2-centimeter) sea salps link together to make luminous chains up to fifteen feet (4.6 meters) long!
- Sea Urchin Fertility - Now that's a busy mother. A female sea urchin produces 500 million eggs in her lifetime.
- Snail Zombies - Parasitic worms seem almost able to make these snails do their own bidding!
- Stunning Jellyfish - With no brains, no heart, and no blood, it's amazing jellyfish have existed for 650 million years!
- Terebellid Worm - It's a leisurely life for the terebellid worm in the salt marshes off the Atlantic coast of the United States.
Amphibians - Take a look into the dual world of amphibians, crossing the lines between land and water, with tadpoles, frogs, toads, and more.
Birds - Masters of the air and heir to the dinosaurs, birds of all shapes and sizes find a home in environments all over earth.
Bugs - The adventures of the world of the very small get writ large in close-up footage of the lives of bugs.
Fish - Dive beneath the surface of rivers, lakes, and oceans, and see the world of fish as never before.
Invertebrates - Catch a glimpse of the bizarre forms life takes among our distant spineless relatives.
Mammals - Witness the amazing diversity of mammal life, from lions and elephants to sheep, bats, whales, and much more.
Reptiles - Watch breathtaking video of animals at their wildest.

Animals Video - All the beauty and excitement of the animal kingdom comes to you in thrilling footage of lions, sharks, squid and more.

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