The Portland Reef () is a submerged shoal not rising above the surface in the Gambier Islands in French Polynesia. It is located in the far southeast of the Tuamotu group archipelago, about 68km southeast from the Gambier Islands, and 30km SSE from Temoe Atoll, below the Tropic of Capricorn.

The Portland Reef is made up of a submarine atoll structure lying at a depth of about 10 m.

References

External links

• French Polynesia Guide