Ribbon Worms Animal insect Facts and Photos

Ribbon Worms Animal insect information Lineus longissimus is shown here in a typical tangled mass. It is found under stones and rock on the lower shore and in shallow parts of the north sea, the atlantik ocean, and the baltik sea, length usually up to 16 feet (5 m), but occasionally 100 feet (30 m).

Common name: ribbon worms, proboscis worms

Phylum: nemertea (also know as rhynchoela or nemertini)

Number of species: about 1,000 described, but total is probably several times more

Size: 0.04 in (1 mm) to 100 ft (30 m) or more

Key features: long, often flattened body, body soft and unsegmented, with complete gut and anus; large projectile proboscis used in feeding may be armed with piercing stylet; body may be colorful with banded pattern

Habits: usually bottom dweling. Often burrowing. Occasionally living commensally on mollusk hosts

Breeding: asexual by fission (breaking of the body) and regeneration or sexual with external fertilization; development is directly to adult or indirectly via a larval stage called the pilidium

Diet: most are predatory on worms and other invertebrates; other omnivorous

Habitat:mostly bottom-dwelling marine habitats, but some in fresh water, a few terrestrial species occur in the humid tropics

Distribution: worldwide

 

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