What body of water borders Equatorial Guinea's island of Bioko?

The island of Bioko, which is part of Equatorial Guinea, is bordered by the Bight of Bonny. This body of water is located on the west coast of Africa and is an extension of the Gulf of Guinea in the Atlantic Ocean. It's known for its significant geographical and economic relevance, particularly due to the presence of oil and gas resources in the area.

The Bight of Bonny specifically surrounds the coast of the region where Bioko is situated, providing it with a strategic location for maritime activities. The waters here also support various ecosystems and have historical importance in trade and navigation along the West African coast.

While the Atlantic Ocean does surround Bioko, it is too broad a designation, as the Bight of Bonny specifically identifies the more localized body of water that directly borders the island. The Gulf of Sidra and the Caribbean Sea are neither geographically relevant nor adjacent to Bioko, further supporting the Bight of Bonny as the correct choice.