Galu - Diani Beach & South Coast

La Grotte de Arue is a spot we always make time for when we’re in Tahiti, not for big pelagics, but for its quieter charm. Dropping to about 27 meters, you'll find the entrance to a small cave that dips a little further. It’s a tight squeeze in places, but nothing too challenging. Inside, it's a calm world. The light filters in, illuminating nooks and crannies where Glasseye Snapper hide, their eyes reflecting your torch beam. We always bring a good macro lens here. You can spend ages finding tiny shrimp tucked into the crevices and spotting Savigny's Brittle Stars clinging to the walls. The cave really acts as a nursery, a safe haven from the open reef. Outside, the coral reef itself is pretty healthy, with schools of Blue and Gold Fusiliers darting about. Visibility averages around 21 meters, which is plenty for appreciating the details. We’d suggest going in the morning; the light seems to hit the cave entrance just right then. It's not a dive for chasing thrills, but if you love slowing down, observing the small stuff, and getting lost in your viewfinder, you'll be happy here. It’s our pick for a relaxed, focused dive away from the faster currents of some other Tahitian sites.

Location: Diani Beach & South Coast, Kenya, Indian Ocean & East Africa
Coordinates: -4.345900, 39.580700
Type: reef

Marine Protected Area: Diani Chale Marine

Best Time to Dive in Diani Beach & South Coast

The warmest water temperatures in Diani Beach & South Coast occur in January, averaging 28.1°C. The coolest conditions are in December at 28.1°C.

Monthly Water Temperatures

January: 28.1°C (air: 27.7°C)
February: 28.1°C (air: 28.2°C)
March: 28.1°C (air: 28.1°C)
April: 28.1°C (air: 26.7°C)
May: 28.1°C (air: 26.2°C)
June: 28.1°C (air: 25.3°C)
July: 28.1°C (air: 24.4°C)
August: 28.1°C (air: 24.5°C)
September: 28.1°C (air: 25.2°C)
October: 28.1°C (air: 26.2°C)
November: 28.1°C (air: 26.7°C)
December: 28.1°C (air: 27.2°C)

Nearest Dive Centres to Galu

Marine Life in Diani Beach & South Coast

Home to 446 recorded species including 284 reef fish, 96 hard corals, 27 seagrass & algae, 7 sea snails & nudibranchs, 7 sea cucumbers, 5 crabs & lobsters.

Notable Species

Green Turtle (Chelonia mydas)
Marbled Parrotfish (Leptoscarus vaigiensis) - Reef Fish
Cigar wrasse (Cheilio inermis) - Reef Fish
Hooded oyster (Saccostrea cuccullata) - Clams & Mussels
Spangled emperor (Lethrinus nebulosus) - Reef Fish
Silver-streaked rainbowfish (Stethojulis strigiventer) - Reef Fish
Crested Sabretooth Blenny (Petroscirtes mitratus) - Reef Fish
Alligator pipefish (Syngnathoides biaculeatus) - Reef Fish
thalassia (Thalassia hemprichii) - Seagrass & Algae
mangrove (Rhizophora mucronata) - Seagrass & Algae
cymodocea (Cymodocea rotundata) - Seagrass & Algae
seagrass (Halophila ovalis) - Seagrass & Algae
Shoalgrass (Halodule wrightii) - Seagrass & Algae
Short-head Sabretooth Blenny (Petroscirtes breviceps) - Reef Fish
Bullethead Parrotfish (Chlorurus sordidus) - Reef Fish
gray mangrove (Avicennia marina) - Seagrass & Algae
Flowery Flounder (Bothus mancus) - Reef Fish
Species code: Tc (Thalassodendron ciliatum) - Seagrass & Algae
Species code: Hs (Halophila stipulacea) - Seagrass & Algae
Rainbow wrasse (Halichoeres iridis) - Reef Fish

Recommended Packing List for Galu

Based on average water temperature of 28.1°C.

Shorty or Rashguard - warm 28°C water needs minimal exposure protection
Mask - essential for every dive
Fins
BCD - buoyancy compensator
Regulator - your most safety-critical piece of gear
Dive Computer - tracks depth, time, and NDL
Surface Marker Buoy (SMB) - essential for boat pickups
Dive Torch - useful for crevices and colour at depth
Underwater Camera - capture your diving memories