Cnidarians 1-18
17 entries in the Cnidarians compendium.
Aurelia (cnidarian)Moon jellies are widely studied gelatinous zooplankton with cryptic species diversity.Box jellyfishBox jellyfish are venomous cnidarians with cube-shaped bells and complex eyes.Chironex fleckeriThe most lethal jellyfish, with venom potent enough to kill 60 adults.Chrysaora fuscescensPacific sea nettle: a colorful, stinging jellyfish of the northeastern Pacific.Hydra (genus)A freshwater genus known for regeneration and apparent immortality.HydrozoaSmall predatory cnidarians, often colonial, with complex life cycles.Lion's mane jellyfishOne of the largest jellyfish, with tentacles longer than a blue whale.Portuguese man o' warA colonial siphonophore with a venomous sting and gas-filled sail.Praya dubiaA deep-sea colonial organism reaching lengths up to 50 meters.ScyphozoaExclusively marine class of true jellyfish, from Cambrian to present.Turritopsis dohrniiA small jellyfish capable of reverting to its polyp stage.AlcyonaceaFormer order of soft corals now placed in Malacalcyonacea and Scleralcyonacea.AnthozoaFlower-like marine animals that build and enhance reef systems.Brain coralStony corals with brain-like grooves, key reef builders.Precious coralMarine coral valued for its durable red skeleton used in jewelry.Sea penColonial cnidarians anchored to seabeds worldwide.Polyp (zoology)One of two body forms in Cnidaria, often colonial and reef-building.
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