Jadini - Diani Beach & South Coast

Maomao Arch, for us, is one of the Poor Knights’ signature dives. It’s not about huge pelagics here, although a striped marlin has been known to cruise past the deeper exit. This site is about the journey, the feeling of moving from one side of the island to the other, all underwater. You drop in on the western side, usually around 10-12 metres, and immediately the light changes as you head into the arch. Inside, the walls pulse with colour – sponges in brilliant oranges and purples, and an unbelievable density of crimson cleaner fish, all flitting amongst the anemones. The arch ceiling is shallow, maybe 5 metres in places, and we love drifting slowly, just taking in the patterns on the rock. It’s here you’ll often find those huge, shimmering schools of pink and blue maomao, so thick they almost block the light from the eastern exit. They’re mesmerising. Coming out the other side, the light explodes back into view, and you’re faced with a jumble of massive boulders. If you head right and down to about 20 metres, there’s a small, open cave, a nice spot to pause and check for a curious short-tail stingray. Visibility averages a solid 16 metres, making the whole experience feel expansive without being overwhelming. This site is perfect for anyone who appreciates the intimate details of a reef and loves a unique underwater transit. It’s a gentle drift, often with little current, suitable for most comfort levels.

Location: Diani Beach & South Coast, Kenya, Indian Ocean & East Africa
Coordinates: -4.322500, 39.585700
Type: cave

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 Jadini

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 Jadini

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