Global Range: (>2,500,000 square km (greater than 1,000,000 square miles)) Warmer parts of Atlantic, Pacific, and Indian oceans, and Mediterranean (Bolten et al. 1992) and Caribbean seas. Ranges into temperate zones in summer. Rare or absent far from mainland shores. Major nesting areas are in temperate and subtropical areas in the southeastern U.S., Mexico, Oman, Australia, South Africa, the Mediterranean, and Japan (Dodd 1992). The world's largest nesting aggregation (30,000 nesting females/year) is on Masirah Island, Oman. Nesting range in the U.S. is mainly the Atlantic coast from North Carolina to southern Florida (Shoop 1985, Dodd 1988), with about 90% in Brevard, Indian River, St. Lucie, Martin, Palm Beach, and Broward counties, Florida (CSTC 1990); this is a major nesting area from a global perspective; Indian River and Brevard counties contain the second densest aggregations of nesting loggerheads in the world (about 6000-15,000 females nesting/year). Large numbers occur off primary nesting beaches in Florida during spring and summer (CSTC 1990). Nesting also occurs along Florida's Gulf Coast. Nests regularly in small numbers in Virginia and sometimes north to New Jersey. In recent years a few have nested on barrier islands along the Texas coast. Chesapeake Bay is an important habitat for subadults in summer. Occurs in summer in waters off the northeastern U.S., mainly between Long Island and Cape Hatteras, usually in water less than 60 m deep (Shopp and Kenney 1992). See Seminoff et al. (2004) for information on occurrence in the Gulf of California. See Dodd (1988, 1990) for further details.