

Best for intermediate divers, boat entry.
Gump Reef is a scientifically significant reef located at the northwest mouth of Cook's Bay near the UC Berkeley Gump Research Station in Opunohu Bay. The site is characterised by high coral cover, including notable populations of fire coral (Millepora). Divers and snorkellers may encounter species such as blacktip reef sharks, spotfin lionfish, flagtail triggerfish, spotted boxfish, and various wrasses. Smaller invertebrates including nudibranchs, shrimp, cushion stars, hermit crabs, and sea cucumbers are also present. Access to this site requires a boat. With water temperatures ranging between 27C and 29C throughout the year, it offers a wilder alternative to typical resort lagoons for intermediate divers and snorkellers.
-17.48010, -149.82720
Recorded at this site
Skill Level
Intermediate
Entry
Boat
Boat required
Water Temp
27-29°C
Best Time
Sep
Divers and snorkellers can observe blacktip reef sharks, spotfin lionfish, flagtail triggerfish, spotted boxfish, and wrasses. Invertebrates such as nudibranchs, shrimp, cushion stars, hermit crabs, and sea cucumbers are also recorded here.
The site is rated for intermediate skill levels, so it is not recommended for beginners.
Yes, Gump Reef is suitable for snorkelling and holds a rating of 4/5 for this activity.
Access to Gump Reef is by boat only; boat charters are available in the area.
Water temperatures range from 27C to 29C throughout the year, with the warmest months being February through May.
A rashguard or 2mm shorty is recommended for diving at Gump Reef in Moorea. Water temperatures range from 27°C to 29°C.
The best months to visit Gump Reef in Moorea are September. Conditions outside these months can still be good but are less predictable.