Tube Worms

Tube Worms

Tube worms live with their bodies buried in tubes that they construct in the soft bottom substrate. Fan Worms ( Sabella spp. and others, 1/8" to 8", right ) are among the most popular sights on tropical coral reefs. Few people realize that they are present in temperate waters as well.

Fan Worms, or "Featherdusters", have a frill of tentacles on the head with which they feed on plankton, and occasionally larger items. Food particles are trapped in sticky mucous and carried down into the mouth. Some Fan Worms have eyespots along the tentacles.

Despite appearances, Fan Worms are not related to any of the other tentacled creatures on this page but are actually polychaetes, related to clam worms.

Fan Worms
Myxicola infundibulum or something similar - note how the tentacles are joined almost to the ends, with no eyespots.
Fan Worms
Fan Worms are extremely sensitive, and withdraw into their tubes at the slightest disturbance, leaving behind a ball of mucous.
terebellid worm
The head of a terebellid worm on a subtidal mudflat in the Shark River. These are tube worms with long tentacles that spread out over the bottom. Cilia on the tentacles carry microscopic bits of food to the mouth ( see below. ) These worms do not sting like anemones.
terebellid worm anatomy
Tubeworm anatomy
Tube worm burrows
Tube worm burrows in the side of a freshly dug hole. The dark color of the sediment indicates anoxic ( no oxygen ) conditions, which is normal in this sort of muddy bottom.

Almost all diving activities, whether in the tropics or in colder waters, will require some sort of exposure suit. For local conditions, this means either a full heavy wetsuit or a drysuit. For the tropics, there are thinner wetsuits and fabric skins, but these are never warm enough for use around here. Water temperatures in the north Atlantic vary from just above freezing at depth during the coldest part of the year to the mid-seventies at the surface during the warmest. Typically, you can expect high-fifties to low-sixties at depth even over the summer.