| Depilatory sea hare | |
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| Species: | A. depilans |
| Binomial name | |
| Aplysia depilans Gmelin, 1791 | |
Aplysia depilans, the "depilatory sea hare", is a species of sea hare or sea slug, a marine opisthobranch gastropod mollusk in the family Aplysiidae. Its name has led to a folk etymology that its consumption caused hair loss.
This sea hare occurs in the eastern Atlantic and the Mediterranean. It can be found mostly in shallow water of about 1.5 to 10 m. It avoids the intertidal zone because the animals cannot absorb atmospheric oxygen and so die after stranding relatively quickly. Occasionally some are trapped in tide pools at low tide. The adults feed primarily on algae of the genus Ulva, especially sea lettuce Ulva lactuca . During the planktonic phase of life they eat single-celled phytoplankton.
Individuals can grow up to 40 cm long and weighs up to 380 g. Their skin is dark brown to reddish brown, with white to light brown blotches. It has a yellow inner shell that is thinner, flatter and more poorly calcified than other sea hares and measures about 1.5 cm long.
When threatened they emit a white or purple ink. Aplysia depilans are one of the seven species of the genus which are known to swim occasionally rather than crawl. Although hermaphrodites, they cannot self-fertilize and require a partner.
The Greek Sophist Philostratus writes that the Roman Emperor Titus (died 81 AD) was poisoned by his brother Domitian with a sea hare and that his death had been foretold to him by Apollonius of Tyana. [1] However, other classical sources such as Suetonius and Cassius Dio maintain he died of natural causes.
Apollonius of Tyana, sometimes also called Apollonios of Tyana, was a Greek Neopythagorean philosopher from the town of Tyana in the Roman province of Cappadocia in Anatolia.
Gymnosophists is the name given by the Greeks to certain ancient Indian philosophers who pursued asceticism to the point of regarding food and clothing as detrimental to purity of thought. They were noted to have been vegetarian by several Greek authors. There were also gymnosophists in upper Egypt who were called Ethiopean Gymnosophists by Apollonius of Tyana.
The California sea hare is a species of sea slug in the sea hare family, Aplysiidae. It is found in the Pacific Ocean, off the coast of California in the United States and northwestern Mexico.
The clade Anaspidea, commonly known as sea hares, are medium-sized to very large opisthobranch gastropod molluscs with a soft internal shell made of protein. These are marine gastropod molluscs in the superfamilies Aplysioidea and Akeroidea.
Aplysiidae is the only family in the superfamily Aplysioidea, within the clade Anaspidea. These animals are commonly called sea hares because, unlike most sea slugs, they are often quite large, and when they are underwater, their rounded body shape and the long rhinophores on their heads mean that their overall shape resembles that of a sitting rabbit or hare.
Aplysia is a genus of medium-sized to extremely large sea slugs, specifically sea hares, which are one clade of large sea slugs, marine gastropod mollusks.
The sea lettuces comprise the genus Ulva, a group of edible green algae that is widely distributed along the coasts of the world's oceans. The type species within the genus Ulva is Ulva lactuca, lactuca being Latin for "lettuce". The genus also includes the species previously classified under the genus Enteromorpha, the former members of which are known under the common name green nori.
Damis was a student and lifelong companion of Apollonius of Tyana, the famous Neopythagorean philosopher and teacher who lived in the early 1st up to the early 2nd century AD.
The white-tailed jackrabbit, also known as the prairie hare and the white jack, is a species of hare found in western North America. Like all hares and rabbits, it is a member of the family Leporidae of order Lagomorpha. It is a solitary individual except where several males court a female in the breeding season. Litters of four to five young are born in a form, a shallow depression in the ground, hidden among vegetation. This jackrabbit has two described subspecies: L. townsendii townsendii occurring west of the Rocky Mountains and L. townsendii campanius occurring east of the Rocky Mountains.
The red Irish lord is a species of fish in the family Cottidae. It is found in the northern Pacific Ocean, from Russia to Alaska and as far south as Monterey Bay. It is a distinctly red fish, with brown, yellow, white, and black mottling, that is generally around 30 cm (12 in) long, though specimens can grow to up to 51 cm (20 in) in length. German naturalist Wilhelm Gottlieb Tilesius formally described it in 1811. Carnivorous, it hides camouflaged among rocks on the ocean floor and lashes out to seize its prey—crabs, fish and shrimp.
The Natal red rock hare or greater red rock hare is a species of mammal in the family Leporidae. It has a slightly grizzled, grayish brown head and reddish brown upperparts. The dense fur is thick and rougher than other rock hares. It is endemic to Africa, and found in southeastern provinces of South Africa, eastern Lesotho, Swaziland, and southern Mozambique. It is a herbivore, primarily feeding on grass. It breeds throughout the year, and one or two pups are usually born in the summer. It is rated as a species of least concern on the IUCN Red List of Endangered Species.
Smith's red rock hare is a species of mammal in the family Leporidae, and is the smallest member of the genus Pronolagus. The upperparts and gular collar are reddish brown in colour. It has warm, brown, grizzled, thicker hairs at the back of the body, and white to tawny, thinner underfur. It is endemic to Africa, found in parts of Kenya, Lesotho, Malawi, Namibia, Rhodesia, South Africa, Tanzania and Zambia. It is a folivore, and usually forages on grasses, shrubs and herbs. It breeds from September to February, and the female litters one or two offspring. Being a leporid, the hare's offspring is called a leveret, or leverets (plural). The young leave the nest at three years of age. In 1996, it was rated as a species of least concern on the IUCN Red List of Endangered Species.
Euphrates was an eminent Stoic philosopher, who lived c. 35–118 AD.
Aplysia fasciata, common name the "mottled sea hare", or the "sooty sea hare", is an Atlantic species of sea hare or sea slug, a marine opisthobranch gastropod mollusk in the family Aplysiidae.
Aplysia dactylomela, the spotted sea hare, is a species of large sea slug, a marine opisthobranch gastropod in the family Aplysiidae, the sea hares.
Aplysia punctata is a species of sea slug in the family Aplysiidae, the sea hares. It reaches a length of up to 20 cm (7.9 in) and is found in the northeast Atlantic, ranging from Greenland and Norway to the Mediterranean Sea.
The dwarf sea hare or pygmy sea hare, Aplysia parvula, is a species of sea hare, a marine gastropod mollusc in the family Aplysiidae.
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. It is the largest sea slug species.
Aplysia morio, the Atlantic black sea hare or sooty sea hare, is a species of sea slug, a marine gastropod mollusk in the family Aplysiidae, the sea hares. It lives in warm waters in the Caribbean Sea and off the south and southeastern coast of the United States, where it feeds on seaweed.
Aplysia gigantea is a species of sea slug, a shell-less marine gastropod mollusk in the family Aplysiidae. The species was first described in the Journal of the Malacological Society of Australia in 1869. A. gigantea is also known more commonly as the sea hare due to their posterior chemosensory tentacles resembling a hare's ear. A. gigantea is the largest known species in Australia of the opisthobranch genus. The species is known to have toxic effects on terrestrial organisms, particularly domestic dogs. Exposure to this species with dogs has been associated with the development of neurotoxicosis, with symptoms ranging from respiratory distress to tremors, muscle fasciculations, and seizures.
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