These two islands are located in the northernmost waters of the Galapagos and feature some of the best diving opportunities in the world. Recently designated as a protected part of the Galapagos Marine Reserve, fishing or extraction of natural resources is no longer allowed in this 15,000 sq. mi. sanctuary. Divers and snorkelers who have the privilege of exploring these northern islands will be immersed in the largest abundance of sharks in the world, and incidentally the world’s greatest fish biomass, averaging 17.5 tons/ hectare. In addition to the plentiful hammerheads, Galapagos sharks, and other species, it is home to a wealth of colorful tropical fish and even sea lions.