Unfurling the codex…

Cnidarians Codexery

A source-cited reference to cnidarians

Cnidarians (17)

Aurelia (cnidarian) — Moon jellies are widely studied gelatinous zooplankton with cryptic species diversity.
Box jellyfish — Box jellyfish are venomous cnidarians with cube-shaped bells and complex eyes.
Chironex fleckeri — The most lethal jellyfish, with venom potent enough to kill 60 adults.
Chrysaora fuscescens — Pacific sea nettle: a colorful, stinging jellyfish of the northeastern Pacific.
Hydra (genus) — A freshwater genus known for regeneration and apparent immortality.
Hydrozoa — Small predatory cnidarians, often colonial, with complex life cycles.
Lion's mane jellyfish — One of the largest jellyfish, with tentacles longer than a blue whale.
Portuguese man o' war — A colonial siphonophore with a venomous sting and gas-filled sail.
Praya dubia — A deep-sea colonial organism reaching lengths up to 50 meters.
Scyphozoa — Exclusively marine class of true jellyfish, from Cambrian to present.
Turritopsis dohrnii — A small jellyfish capable of reverting to its polyp stage.
Alcyonacea — Former order of soft corals now placed in Malacalcyonacea and Scleralcyonacea.
Anthozoa — Flower-like marine animals that build and enhance reef systems.
Brain coral — Stony corals with brain-like grooves, key reef builders.
Precious coral — Marine coral valued for its durable red skeleton used in jewelry.
Sea pen — Colonial cnidarians anchored to seabeds worldwide.
Polyp (zoology) — One of two body forms in Cnidaria, often colonial and reef-building.