Kalksi is one of the islets that abound Green Island Bay. It is located in Barangay Tumarbong in the Municipality of Roxas, Palawan. The island is situated about 15 kilometers east of Roxas town proper. It can be reached by an hour cruise through motor boat.

Meinhardt has provided Civil and Site Engineering Services (Technical Due Diligence) for the Island Development located at Puerto Island, Palawan, Philippines.