Telegraph Reef
Conditions & tides
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
Telegraph Reef is a reef dive on the windward side of Yap, Micronesia. It is a gentle slope with large coral bommies, and it is described as a good night dive among the rocky shelves and bommies before the channel entrances, where fish life is active.
The depth runs from 9 to 25 m. Visibility is 15 to 30 m or more, and current is 0 to 3 km/h, so conditions are mild.
The name comes from the remnants of a subsea telegraph cable laid by the Germans at the turn of the century, which can be seen in places along the top edge of the reef. The cable was a communications link that reached the Asian mainland in Singapore.
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Corals here face the wave action of the windward side, so the hard corals and rock formations tend to be more rounded. At night numerous crinoids can be found. Night dives turn up many lionfish and bright red stonefish, and huge sea hares with blood-red colouring that look like a nudibranch but are nearly a foot long.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Lined BristletoothCtenochaetus striatusReported here · unconfirmed
Humpback SnapperLutjanus gibbusReported here · unconfirmed
Darkcap ParrotfishScarus ovicepsReported here · unconfirmed
Barred RabbitfishSiganus doliatusReported here · unconfirmed
Goldlined RabbitfishSiganus lineatusReported here · unconfirmed
Pacific Orange-spine UnicornfishNaso lituratusReported here · unconfirmed
Steephead ParrotfishChlorurus microrhinosReported here · unconfirmed
LionfishLionfishReported here · unconfirmed
StonefishStonefishReported here · unconfirmed
MandarinfishSynchiropus splendidusObserved near here · iNaturalist
Blacktip Reef SharkCarcharhinus melanopterusObserved near here · iNaturalist
Reticulated DamselfishDascyllus reticulatusObserved near here · iNaturalist
Pacific Bullethead ParrotfishChlorurus spilurusObserved 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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