A pristine piece of land nestled between the Baltra and North Seymour islands, Mosquera Island is a tiny, low-lying islet covered by black lava rocks, sparse vegetation and a white sandy beach lapped by the vivid blue waters of the Pacific. Measuring just 160-metres across and around 600 metres long, Mosquera Island is the petite dwelling place of one of the largest colonies of sea lions in the Galapagos. Marine iguanas, blue-footed boobies, Sally Lightfoot crabs, and Lava Gull also inhabit the shore, and there have been occasional orca whale sightings off the coast. The abundance of marine life in the coral reefs attracts snorkellers to the Galapagos rays, sea turtles, reef sharks, barracudas, moray eels and schools of colourful fish, including hawkfish.