Simply stated, a marine worm is a worm that lives in the ocean, and there are myriad species of them. They come in various sizes, forms, and colors. Some worms are stationary, while others move about. Some worms are parasitic, some are predatory, and still others are plant-eaters. Many worms also possess the ability of regeneration if part of their body is lost, and some are capable of living in the harshest of environments. They all have something in common, though: they are an integral part of the ocean’s ecosystem. Here are brief descriptions of just five cool types of marine worms.
Christmas Tree Worm
This small stationary worm looks much like an anemone, and makes its home on coral mounds. It is beautifully colored and has a conical, swirled shape that comes from crowns consisting of feathery tentacles protruding from a tube-like body. It feeds on passing particles of plant matter and plankton, which are transferred from the water column to the mouth through the appendages on its crowns. These appendages, called radioles, also facilitate respiration, much like gills on fish.
Bearded Fireworm
This flat, segmented worm is a type of bristleworm, which is identified by the hollow, venom-filled bristles that run along both of its sides. This predatory worm is fantastically colored, with long bristles that are lost when the worm is disturbed. When handled, these bristles inflict a horrible burning sensation, giving the fireworm its very literal name.
Peanut Worm
This organic particle-eating worm is able to retract its proboscis into its body, much like the finger of a glove. The resulting shape when retracted is how the peanut worm got its name. The mouth part is covered in tentacles, which it uses to collect its food.
Bootlace Worm
This unattractive, long worm is part of the ribbon worm species and can reach lengths of approximately 197 feet. However, it is quite slender in diameter. This worm is deep brown in color and feeds on other worms, which it pulls inside of its body with its proboscis. Touching this worm is not advised, since its mucus contains a neurotoxin that serves as its defense against predators.
Spaghetti Worm
This worm is named for the tentacles at its mouth, which can be six times its body length. It uses these tentacles to grab passing food particles. If one of these tentacles is bitten or pulled off, it will grow back. Although there is some color variation, this worm is usually subtly colored.
