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Aplacophorans: Aplacophora

Physical Characteristics, Diet, No Common Name (spiomenia Spiculata): Species AccountGEOGRAPHIC RANGE, HABITAT, BEHAVIOR AND REPRODUCTION, APLACOPHORANS AND PEOPLE, CONSERVATION STATUS

NO COMMON NAME (Spiomenia spiculata): SPECIES ACCOUNT

Aplacophorans are found in all oceans.


They are found at depths ranging from 16 to 17,390 feet (5 to 5,300 meters). One group of aplocophorans lives on hydroids, corals, or on the ocean bottom. The other group burrows into the ocean bottom and lives in their tunnels upside down.


Very little is known about the behavior of aplacophorans.

Aplocophorans are either male, female, or hermaphrodites. Hermaphrodites are individual animals that have both male and female reproductive organs at the same time. Depending on the species, the eggs are fertilized in the water or inside the female's body.

Aplacophorans are used by scientists to study the origins of all mollusks.


Aplacophorans are not considered threatened or endangered.

Additional topics

Animal Life ResourceMollusks, Crustaceans, and Related Species