Clam Worm

Alitta succinea

Alitta succinea has a long, cylindrical body that can reach lengths of up to 15 centimeters, although most individuals are smaller. Its body is divided into approximately 160 segments, featuring a distinctive pear shape with a reddish-brown coloration, transitioning to brown at the rear. The head is identifiable with four eyes, two antennae, and numerous tentacles. This species inhabits shallow marine environments, typically found at depths ranging from 5 to 35 meters, and is recorded across the North West Atlantic, Gulf of Maine, and South Africa, as well as in the Mediterranean and Black Sea. Feeding primarily on organic matter, Alitta succinea employs a proboscis with hooks to capture prey, including other worms and algae. It plays a crucial role in the ecosystem as a food source for bottom-feeding fish, crustaceans, and shorebirds. The species is known for its reproductive strategy during lunar phases in spring and early summer, where it undergoes epigamy, becoming free-swimming to release gametes into the water. After spawning, both males and females typically die. Divers may encounter clam worms while exploring sandy or muddy bottoms, where they can be seen scavenging or buried in sediment. Their presence can indicate the health of the marine environment, as they are sensitive to changes in water chemistry. Alitta succinea is also utilized in fisheries as bait and for assessing pollution levels in aquatic habitats.