Richelieu Rock
Similan Islands & Khao Lak, Thailand
Schools of chevron barracuda overhead while tigertail seahorses, harlequin shrimps and ghost pipefish hide in fields of soft coral.
- Advanced
- Wall
- Whale sharks
Similan Islands & Khao Lak, Thailand
Schools of chevron barracuda overhead while tigertail seahorses, harlequin shrimps and ghost pipefish hide in fields of soft coral.

Sipadan & Semporna, Malaysia
On Sipadan's north coast, divers can end up in the middle of a swirling vortex of chevron or blacktail barracuda.
Dahab, Egypt
Drop through the Bells chimney to a wall at about 25 m, then follow the wall to cross the 7 m saddle into the Blue Hole.
Palau
Hook in above the wall and watch resident grey and whitetip reef sharks, tuna and barracuda work the current.
Galápagos, Ecuador
Wall drift beside the pillars of the arch that collapsed in May 2021, with large numbers of hammerheads, silky and Galápagos sharks.

Marsa Alam & the Brothers, Egypt
Open-ocean reef 25 km north of Marsa Alam where oceanic whitetips frequent the southern plateau, best October to December.

Oahu, United States
Shore dive off Haleiwa Beach Park into a reef-cut trench with ledged walls and small caves, bottoming near 30 m.
Malta, Gozo & Comino, Malta
Beneath the Dingli Cliffs, a wall dive with caves, caverns, overhangs and an archway, dropping beyond 60 m.
Cozumel, Mexico
Sloping reef and wall with gentle currents, much of the dive at 12–25 m, a good introduction to drift diving.
Levels with a dashed outline are estimates we are still checking against published sources.