Galapagos Sea Lion Sleeping
Latin Name Zalophus wollebaeki Conservation Status Vulnerable Location Galapagos Islands Colour Brown Length 150 - 250 cms (59 - 98 inches) Weight 50 - 400 Kgs (110 - 880 lbs) Main Characteristics Galapagos Sea Lions are one of the most conspicuous and numerous marine mammals on the Galapagos Islands. They have a body length between 150 and 250 cms (59 - 98 inches) and they weigh between 50 and 400 Kgs (110 - 880 lbs), males being much larger than females. Males are coloured brown, females tend to be a lighter tan and juveniles are coloured chestnut brown. Their bodies are streamline and they have well developed fore flippers which they use to propel themselves through the water. They can control their hind flippers independently which enables them to move around more effectively on land. When males reach puberty they begin to develop a raised forehead and sometimes their hair is lighter coloured on their crest. Habitat Galapagos Sea Lions are found on the islands of the Galapagos Archipelago. They spend a lot of their time swimming in the ocean but while on land they prefer sandy beaches and flat rocky areas that have plenty of shade and tidal pools. While at sea they will rarely venture further than 16 Kms (10 miles) from the coast. Females gather in colonies of approximately 30 individuals and each colony is dominated by one bull. He will hold his territory for a short time before he is displaced by another bull. Bulls that are not dominating a colony will gather together in a bachelor group. Diet Galapagos Sea Lions mainly feed upon fish, squid, octopus and crustaceans. Breeding Galapagos Sea Lions breed between May and January and mating usually occurs in the water. Males hold their territories for 10 days - 3 months and during this time they aggressively defend it. After a gestation period of approximately 11 months, females give birth to 1 pup. When the pups are born they weigh approximately 6 Kgs (13.2 lbs) and they are approximately 75 cms (29.5 inches) long. The pups are attended continuously by their mothers for 6 - 7 days after they are born, then the females have to go to sea to feed themselves, returning to their pups at night. When the pups reach 1 - 2 weeks old they will venture into the water and start to learn how to swim. They are weaned when they reach 11 - 12 months old but because of the long breeding season and the length of time pups are cared for by their mothers, there are dependent pups on the rookeries all year round. Predators The main predators of Galapagos Sea Lions are sharks and killer whales. Dogs are also known to prey upon pups. Interesting Facts Galapagos Sea Lions are also known as:Pagos Sea Lion Nikon D200 handheld 9 shots, stitched with PtGui. Brick floor carefully removed in Photoshop leaving a black background.
Uploaded Oct 15, 2009 by Jason Buchheim username:odyssey copyright 2009
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