It also includes the coastal areas of the adjacent municipalities from which it derives the second half of its name – a combination of the first two letters of Lavezares, Rosario and San Jose.

[2][5] The island's main attraction is its seven gigantic rock formations, namely Magasang, Magsapad, Macadlaw, Puhunan, Bel-at, Caranas and Pinanahawan.

Another unique feature of the island are the natural saltwater pools at Bel-at and Caranas where visitors can enjoy swimming in clear water.

[3] To the south of Biri Channel along the coast of Lavezares are San Juan, Bani and Maravilla islands where several other white sand beaches can be found.

Seagrasses cover about 284 hectares (700 acres) consisting of five species, including Cymodocea rotundata, Thalassia hemprichii, and Enhalus acoroides.