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Friends of Midway Atoll

Friends of Midway Atoll

Preserving, protecting, and restoring the biological diversity and historic resources of Midway Atollal Wildlife Refuge

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Home/Explore & Learn/Plants & Wildlife/Marine Life

Marine Life

Midway’s waters support a rich kaleidoscope of life

Midway Atoll is more than meets the eye: beyond the blanket of a several million birds atop three small islands lies an abundant and diverse marine world. Midway’s terrestrial habitat of 1,464 acres is situated within a large, elliptical barrier reef measuring about five miles in diameter. Refuge realty extends 12 nautical miles from the atoll, encompassing 580,740 acres of marine resources; closer to terra firma, the area inside the lagoon includes about 15,000 acres. Midway is one of the “classical” closed atolls in the Northwest Hawaiian Islands, with a lagoon enclosed by a barrier reef. Numerous patch reefs dot the sandy-bottomed lagoon.

Photo credit: Daniel Clark/USFWS

Marine surveys in Midway waters have documented 266 species of fish and more than 300 marine invertebrates, including 29 types of stony or “hard” corals. It is likely that many more await discovery. Located at the northern extent of one of the highest-latitude coral reef ecosystems in the world, the waters within the Refuge are relatively cold, making the area an important location for research on biological diversity as well as the effects of heat-induced coral bleaching.

Photo credit: Pete Leary/USFWS

Explore more marine life

Fishes

Marine Invertebrates

Honu (Green Sea Turtle)

Hawaiian Monk Seals

Spinner Dolphins

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Preserving, protecting, and restoring the biological diversity and historic + cultural resources of Midway Atoll

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Friends of Midway Atoll

17 Katrina Lane
San Anselmo, CA 94960

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