Koh Haa's underwater realm is a treasure trove of marine biodiversity. Divers can immerse themselves in a world inhabited by a myriad of fish species, including colorful clownfish, majestic manta rays, and, occasionally, the gentle whale shark. The area's coral reefs are vibrant and healthy, supporting diverse ecosystems where macro photographers can delight in spotting seahorses, nudibranchs, and ghost pipefish. The clear waters and protected environment also make Koh Haa a haven for larger pelagic species, offering a thrilling experience for those in search of an encounter with the ocean's giants.