Sea hares are a type of sea slug in the phylum Mollusca that are found in the Mediterranean Sea, along with other species of sea slugs:
Aplysia depilans
Also known as the depilatory sea hare, this species can grow up to 40 cm long and has dark brown to reddish brown skin with white to light brown blotches.
Aplysia fasciata
Also known as the mottled sea hare or sooty sea hare, this species is widespread in the Mediterranean and Atlantic.
Aplysia vaccaria
This species is black or dark brown in color and produces toxins from the brown algae it eats.
Here are some other characteristics of sea hares:
They are hermaphrodites, meaning they have both male and female reproductive organs.
They have soft bodies, a reduced internal shell, and two tall rhinophores that resemble ears.
They can crawl along the seafloor and swim gracefully.
They feed on algae in shallow water.
When disturbed, they can produce a toxic ink to deter and escape from predators.
They are valuable laboratory animals because they have some of the largest neurons in the animal kingdom.