Barnacle adults are sessile; most are suspension feeders with hard calcareous shells, but the Rhizocephala are specialized parasites of other crustaceans, with reduced bodies.

Sep 4, 2025 · A prominent feature of barnacle anatomy is the penis, which is both retractable and capable of growing up to eight times the body length (the highest penis-to-body ratio in the …

Barnacle defined and explained with descriptions. Barnacle is a small crustacean that attaches itself to marine objects such as rocks, and boats.

As the cirri rapidly extend and retract through the opening at the top of the barnacle, they comb the water for microscopic organisms. They quickly withdraw into their protective shells if they …

May 9, 2025 · Barnacles attach to a surface once and stay put for life. Most barnacles, especially the acorn and gooseneck varieties, start life as barnacle larvae drifting in the ocean before …

6 days ago · Barnacle, any of more than 1,000 predominantly marine crustaceans of the subclass Cirripedia highly modified for sedentary life. There are about 850 free-living species (all …

The barnacle possesses a digestive system to process filtered food, along with a nervous system and a basic circulatory system. Respiration, the process of breathing, occurs through the …

A Barnacle consumes either animal or plant matter, making its diet omnivorous. The majority are suspension feeders, they remain permanently inside their shells, which are typically made of 6 …

May 27, 2024 · The barnacle is especially vulnerable to predators during the larval stages of its life cycle. If barnacles are kept as pets, other animals in the aquarium are likely to prey on …

Barnacle ... Nauplius larva of a copepod Nauplius larva of a cirripede the second stage larva of a barnacle, the Cypris. A barnacle is a cirripede, a kind of crustacean. It is covered with hard …