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Pacific oyster females are very fecund, and individuals of 70–100 g live weight can produce 50–80 million eggs in a single spawn. [10] Broodstock adults are held in tanks at 20–22 °C, supplied with cultured algae and with salinities of 25–32 ppt. [10] These individuals can be induced to spawn by thermal shock treatment. [10]
The front cover of a List of Lights volume. A list of lights is a publication describing lighthouses and other aids to maritime navigation. Most such lists are published by national hydrographic offices. Some nations, including the United Kingdom and the United States, publish lists that cover the whole world in many volumes. Other nations ...
Aliger gigas, originally known as Strombus gigas or more recently as Lobatus gigas, commonly known as the queen conch, is a species of large sea snail, a marine gastropod mollusc in the family of true conches, the Strombidae.
Due to erosion, the light was decommissioned in 1918. The tower was disassembled in 1921, and reassembled on Gasparilla Island in 1927. However, the light was not lit until 1932, when it began service as the rear entrance range light for Port Boca Grande, with the front entrance range light approximately one mile off shore in the Gulf of Mexico.
Mantle of giant clam with light-sensitive spots, which detect danger and cause the clam to close. Tridacna gigas, the giant clam, is the best-known species of the giant clam genus Tridacna. Giant clams are the largest living bivalve molluscs. Several other species of "giant clam" in the genus Tridacna are often misidentified as Tridacna gigas.
Meet the New York family that holds the Guinness Book of World Record title for largest residential Christmas light display in the world. After holding the record and then losing it to another ...
Cairns on the Isles of Scilly date back to the Bronze Age and at that time Round Island was probably a peninsula on the northern shore of the main island in the Isles of Scilly. The granite , ashlar , 19 metres (62 ft) tall tower was designed by William Tregarthen Douglass , chief engineer for the Commissioners of Irish Lights , and is built on ...
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