Beroe abyssicola, 4.7 inches long Aequorea victoria ... And one hydrozoan, the immortal jellyfish (Turritopsis dohrnii), seen here in a water drop, has a life cycle that skips death: It reverts ...
But scientists have observed a free-living mushroom coral, Cycloseris cyclolites, actively “walking” toward blue ... Jellyfish also use pulsed inflation to swim through the water, but the ...