Dating site feeders
Their nervous system includes two pairs of nerve cords and three pairs of ganglia.
While some oysters have two sexes (European oyster and Olympia oyster), their reproductive organs contain both eggs and sperm.
In fact, since the beginning of the 20th century, when several researchers discovered how to produce artificial pearls, the cultured pearl market has far outgrown the natural pearl market.
Oysters feed most actively at temperatures above 10 °C (50 °F).
In fact, in a harvest of two and a half tons of oysters, only three to four oysters produce what commercial buyers consider to be absolute perfect pearls.
Over the years, the irritating object is covered with enough layers of nacre to become a pearl.
Many of these animals are prey to larger animals, including fish, such as striped bass, black drum and croakers.
An oyster reef can increase the surface area of a flat bottom 50-fold. They are protandric; during their first year, they spawn as males by releasing sperm into the water.