Get PADI Open Water certified

Snorkel the sardine run at Panagsama Beach (best 6–8 AM, free from shore, gear rental PHP 150)

Day trip to Pescador Island for wall diving and coral gardens

Night dive to see different marine life behavior

Kawasan Falls canyoneering — jump off waterfalls, scramble through canyons (PHP 1,800–2,500 / $32–45 including transport)