| | Facts About Jellyfish Jellyfish get a lot of negative press for the threats they can pose to swimmers and holiday makers visiting beaches around the world. But there's more to jellyfish than a nasty sting. In this article we'll take a closer look at these unique creatures. | Are Jellyfish Mixing Up the Oceans? In the world's oceans, water circulates in currents that stretch between the continents and glide along coastlines. Water from the deep mixes with shallower water through vertical movements called upwellings and downwellings. This complex ebb, flow, rise, and fall of seawater--also known as ocean mixing--transports energy, churns nutrients, and stirs dissolved gasses. | The Life Cycle of a Jellyfish The most recognized image of a jellyfish is that of the adult jellyfish, with its bell-shaped body and long tentacles. But this image is just one of several stages in the life cycle of a jellyfish. Jellyfish progress through a number of forms, including a tiny free-swimming planula, a small polyp that attaches itself to the sea floor, and a pelagic medussa. | Facts About Coral If you've ever visited an aquarium or gone snorkeling when on holiday, you're probably familiar with a wide variety of corals. You may even know that corals play a fundamental role in defining the structure of marine reefs, the most complex and diverse ecosystems in our planet's oceans. | | | | Animals / Wildlife Ads | | | | Featured Articles | | | | | | Sign up for more free newsletters on your favorite topics | | | | You are receiving this newsletter because you subscribed to the About Animals newsletter. If you wish to change your email address or unsubscribe, please click here. About respects your privacy: Our Privacy Policy Contact Information: 249 West 17th Street New York, NY, 10011 © 2011 About.com | | | | Animal Pictures | | Advertisement | |
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