Pacific blue tang

Upolu, Samoa’s most populous island, is surrounded by fringing and barrier reefs shaped by its volcanic geology. Dive sites include coral gardens, lava formations, channels, swim-throughs, and reef walls descending into deeper Pacific water. Green and hawksbill turtles, rays, reef sharks, nudibranchs, and diverse tropical reef fish may be encountered. Reef condition varies considerably around the island: scientific surveys have documented substantial coral loss at many sites, while protected and less-disturbed areas retain stronger coral communities. Upolu’s underwater environment also reflects Samoa’s village-based approach to marine stewardship, with coastal communities participating in the management of fisheries and protected areas.

Fun Fact: Researchers recorded 88 species of red algae at Upolu’s Palolo Deep Marine Reserve, including four species described as new to science.