Heron’s Wall - Iron Bottom Sound

Los Mogotes consistently ranks high on our list for Jardines de la Reina, and for good reason. It’s got that classic Caribbean feel, but elevated. You drop down to a mini wall, maybe 18 metres max, and the first thing you notice is the health of the coral. We're talking massive heads of Boulder Brain and Great Star Coral, a real testament to the park's protection. The real magic happens around the cavern overhangs. We've spent entire dives just exploring these, looking for the shy Graysby tucked into a crevice or watching a gang of Schoolmasters drift past. The big draw here, for us, is the schooling tarpon. They hang in the gloom of the overhangs, their silver scales catching the light just so, and it’s a genuinely impressive sight. Keep an eye out for schooling reef sharks too, they’re often patrolling the deeper edge of the wall. We love seeing the huge rainbow parrotfish crunching away at the reef, their colours just popping against the blue. This is a site that suits anyone comfortable with a gentle drift and a bit of cave exploration, offering plenty to see whether you’re peering into nooks or just admiring the wider reef scene.

Location: Iron Bottom Sound, Solomon Islands, Central & South Pacific
Coordinates: -8.312400, 157.394600
Type: cave

Marine Protected Area: Baraulu/Bule Lavata

Best Time to Dive in Iron Bottom Sound

The warmest water temperatures in Iron Bottom Sound occur in January, averaging 30.5°C. The coolest conditions are in December at 30.5°C.

Monthly Water Temperatures

January: 30.5°C (air: 26.9°C)
February: 30.5°C (air: 26.7°C)
March: 30.5°C (air: 26.7°C)
April: 30.5°C (air: 26.8°C)
May: 30.5°C (air: 26.9°C)
June: 30.5°C (air: 26.5°C)
July: 30.5°C (air: 26.5°C)
August: 30.5°C (air: 26.3°C)
September: 30.5°C (air: 26.5°C)
October: 30.5°C (air: 26.7°C)
November: 30.5°C (air: 26.7°C)
December: 30.5°C (air: 26.9°C)

Nearby Dive Sites in Iron Bottom Sound

Nearest Dive Centres to Heron’s Wall

Marine Life in Iron Bottom Sound

Home to 415 recorded species including 320 reef fish, 29 hard corals, 18 sea snails & nudibranchs, 16 sea cucumbers, 7 seagrass & algae, 5 clams & mussels.

Notable Species

Blue-lined Surgeonfish (Acanthurus lineatus) - Reef Fish
Bristle-toothed Surgeonfish (Ctenochaetus striatus) - Reef Fish
Blue and Gold Fusilier (Caesio caerulaurea) - Reef Fish
Boring Clam (Tridacna crocea) - Clams & Mussels
Orange-lined Triggerfish (Balistapus undulatus) - Reef Fish
Dusky Parrotfish (Scarus niger) - Reef Fish
beautiful fusilier (Caesio teres) - Reef Fish
Blue-lined Tang (Zebrasoma scopas) - Reef Fish
Rainbowfish (Halichoeres hortulanus) - Reef Fish
Redfin Butterflyfish (Chaetodon lunulatus) - Reef Fish
Burrowing urchin (Echinometra mathaei) - Sea Urchins
Small giant clam (Tridacna maxima) - Clams & Mussels
Kihikihi (Zanclus cornutus) - Reef Fish
Latticed Butterflyfish (Chaetodon rafflesii) - Reef Fish
Bleeker's Parrotfish (Chlorurus bleekeri) - Reef Fish
Butterfly fish (Chaetodon vagabundus) - Reef Fish
Black-barred Surgeonfish (Acanthurus nigricauda) - Reef Fish
Mimic Surgeonfish (Acanthurus pyroferus) - Reef Fish
Triangular Butterflyfish (Chaetodon baronessa) - Reef Fish
Wrasse (Labroides dimidiatus) - Reef Fish

Recommended Packing List for Heron’s Wall

Based on average water temperature of 30.5°C.

Shorty or Rashguard - warm 30°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