Although there are Filipinos who have yet to know and visit Calapan City, it is fast becoming one of the premier tourism sites in the Philippines.  This veritable tropical paradise boast of many fun, leisurely and exciting activities which will please any type of guest.

1. Scuba Diving - Calapan City has a good potential for scuba diving given the wide expanse of its marine territory and a good number of small islands. The city also serves as a natural spill-over area for the established diving destinations such as Batangas and Puerto Galera.
2. Muck Diving - Muck diving is a fairly new activity that involves scuba diving and to a large extent, macro photography. One opportunity presented by muck diving is that it does not require pristine, large tracts of coral reefs. In fact, muck diving would be most successful in areas where other substrates such as sand or mud would be present. Calapan Bay has wide areas that have good potential for muck diving offering different substrates such as sand, seagrass, and small coral heads.
3. Snorkeling - Snorkeling is highly ideal and it could also bring more visitors to Harka Piloto. With a good coral cover, it will also validate the site as an outdoor learning area (marine camp).
4. Harka Piloto Marine Sanctuary as an island marine school - Students and conservation personalities shall be encouraged to visit the area for possible learning opportunities.
5. Scuba Diving - Since most of the dive sites in Batangas and Puerto Galera are fairly visited by most domestic scuba divers, Harka Piloto is marketed as a new dive site.
6. Kayaking - To be introduced as an add-on, kayaking will provide the visual attractiveness of the Harka Piloto as a recreation area.
7. Glass-bottom Boat - As part of the educational and recreation programs in Harka Piloto, a glass bottom boat will be introduced in the area. Said boat takes care of the guests who cannot swim or would opt to view the living corals and other marine life on board a board. This also affords the one trip or a guide to handle more guests compared to snorkeling that would require lower ratio between guides and guests.
8. River Cruising - Baruyan River, together with Caluangan Lake was developed into an ideal river cruising destination. Simple development such as the establishment of raft or kayak stations was established in the area through the help of hotels and resorts owners. This helps the existing accommodation facilities to have the chance to offer more activities for their guests who prefer simple activities.
9. Mountain Biking, Hiking, and Trail Running - These are activities that are easily introduced in the interiors of Calapan City. Community trails already exist and can easily be utilized for these activities. One site that is promoted is the Bulusan Eco-Trail that has an expanse that includes the premises of the Calapan Recreational and Zoological Park to rivers systems, forests, and the Suqui Beach area.
10. Skim Boarding - The wide and shallow expanse of beach areas in Calapan make it ideal for skim boarding which has been gaining enthusiasts and visitors to sites offering such activity.
11. Rock Climbing - The south-eastern part of the Silonay Island has a rock wall that could be an ideal site for rock climbing.
12. Birdwatching - The Department of Tourism is going full-blast in marketing the Philippines as a birdwatching destination. With a good number of bird species in the whole of Mindoro Island, Calapan develops birdwatching as an ecotourism activity, or link it to other possible birdwatching sites such as Naujan Lake and Mt. Halcon.