Tuesday 22 February 2011 Galapagos fur seal - Nature's Most Insulated Fur Bearer

The Galapagos fur seal (Arctocephalus galapagoensis) is one of the smallest eared seals and is only 1 1/2 meters in length (4.5 feet) and they generally weigh just under 64 Kilograms (141 lbs). These seals have a brownish coat and are found in the Galapagos Island Chain, just west of Ecuador. Though they were once completely endemic to this island chain, colonies of Galapagos fur seals have been established around the world by the Organization for Research and Conservation. As a result, they can now be found as far north as Peru.

Galapagos fur seals have a diet that consists of mainly fish and cephalopods, with their dietary preferences centering mainly around the Galapagos reef octopus and Broadclub Cuttlefish. The hunting duties of the colony are delegated to the female of the species and each female assumes a territory that is a satellite of the larger fur seal colony. The female will use this territory to hunt for food and breed her pups. Seal pups will nurse for approximately two years before they head off on their own and establish their own territories.

The food supply for Galapagos fur seals are plentiful for most years. This changes during an El Nino season, however. This is because an El Nino causes the waters around the islands to warm dramatically, thus driving their primary prey to cooler waters. This can have a devastating effect on the colonies of the fur seals because the adult seals tend to feed themselves before they feed their young, thereby causing many of the pups to die from starvation.

What makes the Galapagos fur seal so >