Scuba diving in Cathedral Caves

  • must see
From Boat
Diver level
Average: 10 m
Maximum: 21 m
Average: 15 m
Maximum: 20 m
Cathedral Caves is a dive site on the Tasman Peninsula that has the largest sea cave system in Australia. It starts with a huge entrance leading to small caverns full of cross-passageways and tunnels. There are plenty of fallen boulders, and the caves are covered with colorful invertebrates.

When to go

The best time to dive at this site is from December to February. This time has the best sea conditions and warmest water, averaging 20-24C/68-75F. June to August are the coldest months.

What to see

The Cathedral Caves site has a number of spectacular species, like weedy seadragons, cuttlefish, sea spiders, nudibranchs, kelpfish, and wrasses. It is even possible to spot some seals on the way to this dive site.

Reachable from


Liveaboards with trips to Cathedral Caves

Reviews about Cathedral Caves

Do you have an insight or story on this dive site? Tell everyone about it.