Conditions
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
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About this site
Umatac Beach sits on the western coast of Guam, within Umatac Bay in the island's southern municipality of Umatac. The bay is historically notable as one of the early landing points for Spanish galleons crossing the Pacific, and the small village still faces the water from the shoreline.
AI overviewMarine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Princess DamselPomacentrus vaiuliReported here · unconfirmed
Tracey's DamselfishChrysiptera traceyiReported here · unconfirmed
Dusky SurgeonfishAcanthurus nigrofuscusReported here · unconfirmed
Pacific Bullethead ParrotfishChlorurus spilurusReported here · unconfirmed
Jewel DamselStegastes lacrymatusReported here · unconfirmed
Ringtail Maori WrasseOxycheilinus unifasciatusReported here · unconfirmed
Bluestreak Cleaner WrasseLabroides dimidiatusReported here · unconfirmed
Fivestripe WrasseThalassoma quinquevittatumReported here · unconfirmed
Indo-Pacific Man-O-WarPhysalia utriculusObserved near here · iNaturalist
Galaxy CoralGalaxea fascicularisObserved near here · iNaturalist
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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