This difference in food sources likely minimizes competition between the two species, which share much of the same habitat. californica feeds almost exclusively on red algae. It is a herbivore that feeds on brown algae, but its close relative A. vaccaria to become the largest known species of sea slug. They grow very quickly, at an average rate of 4.9 g/day. Lifecycle and behavior Īplysia vaccaria has a lifecycle of one year. This species eats brown seaweeds and kelp, which give the animal its typically very dark coloration. Unlike many other members of the same family and genus, this species is incapable of producing ink.Īll Aplysia species are herbivorous. Unlike Aplysia californica, the body of this species is relatively firm, and the parapodia are joined behind the siphon. The black sea hare can grow to be very large the longest recorded specimen measured 99 cm (39 in) when crawling (thus fully extended), and weighed nearly 14 kg (31 lb). This sea hare species lives in the northeast Pacific Ocean off California, United States and Baja California, Mexico, including the Gulf of California. Aplysia vaccaria, also known as the black sea hare and California black sea hare, is a species of extremely large sea slug, a marine, opisthobranch, gastropod mollusk in the family Aplysiidae.
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