The Parapodia, which operate as a foot that carries the lateral projections, are the most common structures seen in marine gastropods.
They are found in the phylum Annelida and are often found in a class that includes sand worms, tube worms, and clam worms.
Worms that consist of parapodia is:
The bristle worms are part of the Polychaeta class, which also includes the primarily marine annelid worms.
These creatures include the body segment, which bears a pair of new protrusions called parapodia that carry numerous chitin bristles.
Polychaetes are found at all depths in the Earth's seas, beginning as plankton at the top.
The segments of the worms are typically vividly colored and luminous, with a pair of paddle-like and highly vascularized parapodia utilized for propulsion.
It also serves as the main respiratory surface.
The chaetae, or bundles of bristles, are considered to be projections from the parapodia.
These parapodia are mostly seen in the annelid phylum.
These can be paired or unjointed, with or without lateral outgrowths bearing the chaetae.
The term "parapodium" refers to lateral fleshy protrusions of Polychaeta, which are often observed in numerous families of sea snails and sea slugs.