Other Free Encyclopedias » Animal Life Resource » Jellyfish, Sponges, and Other Simple Animals

Hemichordates: Hemichordata - Physical Characteristics, Behavior And Reproduction, Hawaiian Acorn Worm (ptychodera Flava): Species Accounts, Spaghetti Worm (saxipendium Coronatum): Species Accounts - GEOGRAPHIC RANGE, HABITAT, DIET, HEMICHORDATES AND PEOP

live water algae diatoms

HAWAIIAN ACORN WORM (Ptychodera flava): SPECIES ACCOUNTS
SPAGHETTI WORM (Saxipendium coronatum): SPECIES ACCOUNTS

Hemichordates live in all the oceans of the world.


Adult acorn worms usually live in shallow water in burrows at the bottom, but sometimes they live in the sand inside shells, under rocks, in thick seaweed, or between root tangles. Colony-forming hemichordates usually live in deep water in the tubes they make from mucus.

Hemichordates eat bacteria, microscopic algae, diatoms, and nutrients they scrape from particles of sand and mud or collect from the water. Algae (AL-jee) are plantlike growths that live in water and have no true roots, stems, or leaves. Diatoms (DYE-uh-tahms) are a type of algae that have a shell.


Hemichordates have no known importance to people.


Hemichordates are not considered threatened or endangered.

Sea Squirts: Ascidiacea - Physical Characteristics, Behavior And Reproduction, No Common Name (distaplia Cylindrica): Species Accounts, No Common Name (botryllus Schlosseri): Species Accounts - GEOGRAPHIC RANGE, HABITAT, DIET, SEA SQUIRTS AND PEOPLE, CONS [next] [back] Arrow Worms: Chaetognatha - Physical Characteristics, Behavior And Reproduction, No Common Name (pterosagitta Draco): Species Accounts, No Common Name (eukrohnia Fowleri): Species Accounts - GEOGRAPHIC RANGE, HABITAT, DIET, ARROW WORMS AND PEOPLE, CONSERV

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