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Posts Tagged ‘early life of Pacific sleeper sharks

Above the Pacific sleeper shark

1. The Pacific sleeper sharks eats north pacific giant octopus and they are also known to feed on bottom-dwelling teleost fishes as well as soles, flounders, pollocks, rockfish, shrimps, hermit crabs and even marine snails. But larger Pacific sleeper sharks are found to feed on fast swimming prey such as squids, Pacific salmon and harbor porpoises. The Pacific sleeper shark seems to broaden as they increase in size. For example a 3.7 ft female shark found off Trinidad, California was found to have fed mostly on Giant Squid. A 12 foot female caught off the coast of Chile had a whole Southern Rightwhale Dolphin in its stomach. Sleeper sharks found in Alaskan waters from 6.5 to 10 feet seem to feed mostly on flounder, pollock, and cephalopods, while sleeper sharks 11 to 14 feet long seem to consume teleosts and cephalopods, as well as marine mammals. It is one of two creatures along with the Sperm Whale that feeds on mature giant squid and colossal squid. Since the 7 m (23 ft) shark might have problems catching and devouring a 12 to 14 m (39 to 46 ft) squid, it is believed that the shark may feed on squid carcasses rather than live squid. However, it is also entirely possible that it may be able to catch live squid that are either sick or malnourished, given the squid’s reduced ability to fight back under such circumstances.

2. There is very little known about the early life of Pacific sleeper sharks. Pacific sleeper sharks are believed to produce eggs that hatch inside the female’s body but gestation time is unknown and litter sizes are thought to be about 300. Its length at birth is approximately 42 centimeters (1.38 ft) or less.

3. Pacific sleeper sharks are reported to reach lengths of up to 25 feet. The average size is 12 feet and 700 to 800 pounds. The largest reported captured Pacific sleeper shark is 4.4 m (14 ft), although accepts that it could possibly reach 7 m. In 1989, an enormous Pacific sleeper shark was attracted to a bait in deep water outside Tokyo Bay, Japan and filmed. The shark was estimated by Eugenie Clark to be about 7 m (23 ft) long.

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