Tangalan was formerly an arrabal of Makato. At the time of its creation, it included the following barrios: Tondog, Jawili, Dumatad, Afga, Baybay, Dapdap, Pudyot, Tagas, Tamalagon, Panayakan, Vivo, Lanipga, Napatag and Tamokoe.
Tourist spots with government support under "Project Bugna" include Jawili Falls, Jawili Beach Resorts, Dumatad Souvenir Shop, and Bughawi Reforestation Project.
The Tangalan Marine Sanctuary covers 375 hectares (930 acres) of marine ecosystem and a 10 hectares (25 acres) coral garden. This project deploys artificial reefs on which the natural corals will grow. This will serve to fishes and other marine species as their harbor and fort where to settle and multiply. The Government targets for the next 10 years of protection to this site, marine resources will recovered. If fishes and other marine life will vigorously multiply, it will be expected that they will go out from this sanctuary, and this is now the time where local fisherfolks can caught the abundant fish and other marine resources. This will also open as a SCUBA diving site and good for snorkeling.