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The white abalone, scientific name Haliotis sorenseni, is a species of large sea snail, a marine gastropod mollusk in the family Haliotidae, the abalone. [3]The white abalone is an endangered species in the United States; it may now have the smallest population of all eight of the abalone species on the west coast of North America.
Endangered (EN) species are considered to be facing a very high risk of extinction in the wild. In September 2016, the International Union for Conservation of Nature (IUCN) listed 507 endangered mollusc species. [1] Of all evaluated mollusc species, 7.0% are listed as endangered. The IUCN also lists nine mollusc subspecies as endangered.
There are 34 freshwater gastropod taxa on this list. The only marine endangered gastropod is Haliotis sorenseni. The only overseas endangered land snail is Papustyla pulcherrima. Altogether 36 gastropod species are federally listed as of 2 October 2009. [4]
Haliotis cracherodii, the black abalone, is a species of large edible sea snail, a marine gastropod mollusk in the family Haliotidae, the abalone. [4]This species is relatively small compared with most of the other abalone species from the eastern Pacific, and it has a relatively smooth dark shell.
Gastropods are found in a wide range of aquatic and terrestrial habitats, from deep ocean trenches to deserts. [citation needed] Some of the more familiar and better-known gastropods are terrestrial gastropods (the land snails and slugs). Some live in fresh water, but most named species of gastropods live in a marine environment. [citation needed]
Michael G. Hadfield was born in 1937. He attended the University of Washington where he earned both a B.A. and M.S. in Zoology. Hadfield was awarded a Fulbright Fellowship, which allowed him to study in the marine laboratory of the University of Copenhagen under famed larval biologist Gunnar Thorson.
As of February 2021, the International Union for Conservation of Nature (IUCN) lists 299 extinct species, 149 possibly extinct species, 14 extinct in the wild species, two possibly extinct in the wild species, eight extinct subspecies, one possibly extinct subspecies, and five extinct in the wild subspecies of mollusc.
Triplofusus giganteus, commonly known as the Florida horse conch, or the giant horse conch, is a species of extremely large predatory subtropical and tropical sea snail, a marine gastropod mollusc in the family Fasciolariidae, the spindle snails, tulip snails and their allies. [1] On average, it weighs over 11 pounds (5.0 kg). [2]