The Tañon Strait Protected Seascape (IUCN Management Category V) was established by President Ramos under Proclamation No.

[2] On February 7, 2008, the Supreme Court of the Philippines ordered the Department of Environment and Natural Resources and the Department of Energy to comment on a certiorari petition filed for baleen and toothed whales, dolphins, porpoises including the Irrawaddy dolphins, and other cetacean species in the Tañon Strait to stop oil exploration by Japan Petroleum Exploration Co. Ltd. (JAPEX) in the protected waterway.

[4][5] JAPEX subsequently abandoned oil exploration in the area, saying that initial drilling had shown lack of commercial opportunity.

Sinogo fled west and eventually used the shell's power to turn himself into a giant crocodile (a sacred animal in old beliefs) so he could go deep in the straight "between two islands", modern-day Cebu and Negros.

Kaptan, disappointed and angry, struck Sinogo with lightning, shocking the messenger giant and imprisoning him for all of eternity in modern-day Tanon Straight.