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.
Dived here today? How were conditions vs. what we showed?
About this site
The Hai Jian (海建號) is a ship reef sunk off Changtan, Keelung, close to the Chaojing marine reserve. The hull sits at about 25 m and neighbouring steel artificial-reef frames reach 28 m. It is an intermediate dive with fish schooling around the structures.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Black-margined NudibranchDoriprismatica atromarginataReported here · unconfirmed
Longspined PorcupinefishDiodon holocanthusReported here · unconfirmed
Ferocious reef crabEriphia feroxReported here · unconfirmed
Mottled Lightfoot CrabGrapsus albolineatusReported here · unconfirmed
Dussumier's RockskipperIstiblennius dussumieriReported here · unconfirmed
Gloomy NudibranchTambja morosaReported here · unconfirmed
Varicose Wart SlugPhyllidia varicosaReported here · unconfirmed
Striated rockskipperPraealticus striatusReported here · unconfirmed
Ocellate PhyllidiaPhyllidia ocellataReported here · unconfirmed
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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