The Welsh buccaneer Henry Morgan established his base at Port Royal on Roatán, about 30 kilometers from Utila, in the mid-17th century; at that time as many as 5,000 pirates were living on that island. Colonization by the Spanish began in the early 16th century. Over the next century, the Spanish plundered the island for its slave trade and eliminated the island of its natives by the early 17th century. Britain, in its aggressive attempt to out-colonize the Spanish in the Caribbean, occupied the Bay Islands on and off between 1550 and 1700. During this time, the buccaneers found the vacated, mostly unprotected islands a haven for safe harbour and transport. Utila is rich in pirate lore, and even presently, scuba divers look for sunken treasure from Captain Morgan's lost booty from his raid on Panama in 1671. The British were forced to give the Bay Islands to the Honduran government in the mid 19th century. It was at this time that the nearly uninhabited islands were being populated by its now Caymanian roots. They remain rich in Caymanian culture and dialect. Utila has been a part of Honduras for approximately 150 years. For nearly 200 years Spanish "conquistadores" and British pirates battled for control of these islands, ignoring the native people for the most part. During this period, the Islands were used for food and wood supplies, safe harbour, and slave trading. Remains of British forts and towns named after famous pirates remain as their legacy. Making a significant impact on Utila's cultural base were the Black Caribs, who originated as the Callinagu in the Orinoco Delta in Brazil. Migrating north to the Lower Antilles the Callinagu subsequently exterminated the Arahuaco men, but kept and bred with their women creating a new ethic subgroup that became known as the Caliponan, or Yellow Caribs. In 1635 African slaves who had been shipwrecked by their own devices began to marry the Caliponan women, adopting their language and culture so as to assimilate locally and thwart their owners attempts to retrieve them. Thus the Garifuna society was born. On 12 April 1797, a total of 2,248 Garifunas were sent to Honduras and the Bay Islands in an attempt by the English to restrain the Garifuna from assisting the French in the English/French dispute over the islands of Martinica, and Santa Lucia.