wreck

Log This Dive

Sonic Boom Cave

Sonic Boom Cave, just a short kick from Big Eyes Lair, definitely earns its name. You’ll probably hear it before you see it, a deep thrumming that vibrates through the water, especially if there's any surge running. That distinctive boom comes from the swell crashing at the back of the cave, so it’s best visited on calmer days. We love the feeling of that sound resonating through your chest, a primal reminder of the ocean's power. Inside, it’s a tight squeeze, not for the claustrophobic, but the walls are a mosaic of colourful sponges and anemones. Outside, the reef slopes away, and we've often seen schools of snapper hovering, and the occasional bronze whaler cruising past. For us, it’s the combination of the unique acoustics and the chance to spot everything from tiny gem nudibranchs to larger pelagics that makes it a standout. We’d suggest going at high tide on a calm day for the easiest entry and the best chance to really appreciate the sound.