Dark-Spot Cadlina

Cadlina sparsa

Cadlina sparsa is a small sea slug that can reach a maximum body length of 10 mm. It is characterized by its dark spots, which help distinguish it from similar species. This nudibranch is typically found in rocky environments, including caves and crevices, where it thrives in the benthic zone. The species inhabits waters in the Eastern Pacific and Western Atlantic regions, with recorded depths ranging from 2 to 79 m, although it is most commonly encountered between 2 and 8 m. Feeding primarily on sponges, particularly Aplysilla sp., the Dark-spot Cadlina plays a role in the marine ecosystem by contributing to the control of sponge populations. Spawning occurs from January to April, during which the nudibranch lays whitish spiral ribbons of eggs. An encounter with this species during a dive may involve spotting it on rocky substrates, often camouflaged against the background, and divers should be mindful of its small size. The conservation status of Cadlina sparsa is currently not evaluated by the IUCN, indicating that there is insufficient data to assess its population trends or threats. Divers are encouraged to observe this species respectfully, ensuring its habitat remains undisturbed.