As you observe jellyfish twirl underwater, it's difficult not to be mesmerized by their graceful movements. But if their tentacles touch your skin, you'll regret being anywhere near these gelatinous blobs.
WHAT'S INSIDE: MARINE LIFE
- Corals & Jellies
- Starfish & Related Organisms
- Other Marine Life
Although no one can yet tell how old lobsters get, they show no apparent signs of aging. Learn why lobsters live so long and get so big, and what this means for other animals, including humans.
Hermit Crab is a land- or water-dwelling crustacean. Unlike true crabs, hermit crabs have soft, vulnerable abdomens.