or SEAL ISLANDS, two groups of guano islands in the Pacific Ocean, lying off the coast of Peru. The landward and northern group are about 20 miles W. of the mainland, in S. Lat. 6° 29', W. Long. 80° 53', and consist of one large island, 5 miles long by 2 in breadth, with several rocky islets. The seaward group lie about 38 miles from the mainland, in S. Lat. 6° 56', W. Long. 80° 55', and consist of two islands of about the same size, viz., 1 mile long by 1 in breadth, and separated from each other by a narrow channel. Both belong to Peru, although unsuccessful attempts have been made at various times by the United States government and private companies to obtain possession of them. On the N. group there is estimated to be a deposit of guano of about 400,000 tons, and on the other