Semiaquatic

Semiaquatic animals

• Vertebrates
• * Semiaquatic tetrapods
• * Amphibious fish; also several types of normally fully aquatic fish such as the grunion and plainfin midshipman that spawn in the intertidal zone
• Semiterrestrial echinoderms of the intertidal zone, such as the "cliff-clinging" sea urchin Colobocentrotus atratus and the starfish Pisaster ochraceus
• Arthropods
• * Aquatic insects with at least one nonaquatic life-cycle stage, or amphibious insects. Members of the hemipteran infraorders Gerromorpha and Nepomorpha occupy a variety of semiaquatic and aquatic niches, with many of the former locomoting on the water surface; a few of these are marine.
• * Semiaquatic springtails, such as Anurida maritima
• * Semiterrestrial malacostracan crustaceans
• * Horseshoe crabs are mostly aquatic but spawn in the intertidal zone; juveniles live in tidal flats
• * Semiaquatic spiders, such as Ancylometes or Dolomedes
• * An amphibious centipede, Scolopendra cataracta
• Semiaquatic annelids, such as the earthworm Sparganophilus
• Molluscs
• * Intertidal bivalves, such as Enigmonia, which lives on mangroves
• * Intertidal chitons, such as Acanthopleura granulata
• * Semiterrestrial gastropods, such as the intertidal Patella vulgata, a limpet; also amphibious freshwater and marine snails, such as Pomatiopsis or Cerithideopsis scalariformis, respectively
• Semiterrestrial flatworms of the intertidal zone, such as the acotylean Myoramyxa pardalota

Semiaquatic plants

• Semiaquatic angiosperms
• Semiaquatic conifers, such as pond cypress
• Semiaquatic ferns, such as Pilularia americana
• A semiaquatic horsetail, Equisetum fluviatile
• Semiaquatic quillworts, such as Isoetes melanospora
• Semiaquatic club mosses, such as Lycopodiella inundata
• Semiaquatic mosses, such as Sphagnum macrophyllum
• Semiaquatic liverworts, such as Riccia fluitans