hydrozoa
Tentacled aquatic invertebrates
Hydrozoa is a class of mostly marine invertebrates within the phylum Cnidaria, including hydroids, fire corals, and the Portuguese man-of-war.
Most hydrozoa have both polyp and medusa stages in their life cycles.
The term appears primarily in scientific and taxonomic contexts: The hydrozoa collected from the reef included several colonial species. (Capitalized Hydrozoa is the standard taxonomic form.)
Marine skeletal formation
- sea anemoneTentacled marine polyp
- box jellyfishCube-shaped venomous sea creature
- moon jellyTranslucent pulsing sea invertebrate
coral
Marine skeletal formation
- sea anemoneTentacled marine polyp
- box jellyfishCube-shaped venomous sea creature
- moon jellyTranslucent pulsing sea invertebrate
- cnidarianssea anemone, corals, stony coral, moon jelly, jellyfish
hydrozoascyphozoa
Class of true jellyfish
box jellyfish · anthozoa · corals · sea anemones · moon jellyfish
hydrozoavertebrates
Animals with internal skeletons
mammals · cephalopods · octopus · crustaceans · arthropods
hydrant, hydra, hydrated, hydration, hydrogen, hydraulic, hydraulics, hydroelectric, hydrodynamics