Heartless, brainless and spineless and very beautiful. The Pacific Sea Nettles movement is mesmerizing! Its bell can grow up to 30 inches wide and their tentacles have been documented as long as 16 feet!
Like other jellyfish, sea nettles are carnivores. They catch prey by paralyzing them with their tentacles, covered with nematocysts. Each nematocyst has a type of trigger that injects venom upon contact. The oral arms then transport the prey to the mouth, partially digesting it on the way. Nettles eat zooplankton, crustaceans, snails, fish and their eggs, and other sea jellies.