Shark Alley (Tanna) - Tanna

Dive Briefing

"The dive at Shark Alley (Tanna) begins with a thorough operator briefing covering the site layout, expected marine life and emergency procedures, followed by a controlled entry and a short transfer from Lenakel, Tanna. Descending toward the slope, cleaning station profile, divers are immediately surrounded by Grey reef shark, Whitetip reef shark, Giant trevally, Scalloped hammerhead, Napoleon wrasse, with the reef and structure revealing more detail the closer you look. The maximum depth reaches about 35 m while the average sits near 28 m, so a dive computer and disciplined gas planning keep the profile safe and comfortable. Currents are described as moderate, and the guide chooses the entry time to make the most of slack or mild flow, using a reef hook or surface marker when needed. Neutral buoyancy protects the fragile coral and the group stays close to manage depth and any surge. The safety stop is completed in open water on a surface marker, and the boat follows the bubbles to collect divers at the exit point for a relaxed return to base. Shark Alley (Tanna) is best dived from April to November, Vanuatu's dry season, when settled seas and the clearest water make for the most reliable conditions. The moderate current is at its calmest around slack tide, so most operators plan the descent to coincide with the turn of the tide. Water holds 24 to 29 C, and a 3 to 5 mm wetsuit is ample. Plan a slow profile to enjoy the 25 to 35 m range and to protect the fragile reef with good buoyancy. A torch helps reveal the smaller residents, and a surface marker buoy is recommended for the safety stop so the boat can track divers in the often gentle swell."