Ammo Jetty
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
Ammo Jetty, short for Ammunition Jetty, is a shore dive among jetty pylons in Perth. Its depth has historically reached only 8 to 9 metres, which suited newly certified divers who wanted time to relax and build confidence.
The pylons give a simple navigation line: follow one side, explore slowly, and come back along the other. Seahorses, squid, cuttlefish, nudibranchs, octopuses, hermit crabs and many small fish live around them.
The bottom is silty and stirs up easily, so slow fin movements and good buoyancy protect visibility and the life on the pylons.
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The jetty and the water beside and beneath it are closed after storm damage in 2026. Diving, swimming and snorkelling are not permitted while the closure stands, and a new jetty with better diver access is planned.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
CuttlefishCuttlefishReported here · unconfirmed
SeahorseSeahorseReported here · unconfirmed
NudibranchNudibranchReported here · unconfirmed
OctopusOctopusReported here · unconfirmed
SquidSquidReported here · unconfirmed
Fanbelly LeatherjacketMonacanthus chinensisReported here · unconfirmed
West Australian SeahorseHippocampus subelongatusReported 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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