Diving in Batu Jalan means exploring the three underwater rocks and a cave resembling Swiss cheese. Inside is the heaven for glassfish and shrimps, as these two species are abundant. Groupers, wrasse, and parrotfish are among the fish species found in the area.

Moray eels, blue-ringed octopus, nudibranchs, and crabs can often be spotted, while barracudas, jacks, tunas, eagle rays, and manta rays are not uncommon to see. The bright colors of sea fans, hard and soft corals, and sponges adding the stunning underwater landscape.