There are some 2,000 species of jellyfish. Some are tasty, others will kill you with the tap of a tentacle. Here are nine varieties that really stand out
- By Abigail Tucker
- Smithsonian.com, August 01, 2010
NASA scientists recently stuck a camera beneath a 600-foot-thick West Antarctic ice sheet, expecting to find no signs of life. But in the frigid water they saw what appeared to be the tentacle of a foot-long jellyfish.