colorful fantasy marine creature animal neon jellyfish in underwater setting tentacles and gradient

jellyfish colorful vibrant underwater neon sea ocean tentacles octopus marine creature pink yellow cephalopod deep purple orange blue water sunlight dynamic color wildlife biology translucent cnidarian stinging bioluminescent graceful medusa life toxic sting venomous aquatic exploration creatures deepsea ecology diversity cnidaria bloom swarm invertebrate transparent bioluminescence beauty