Diamond Bay

Shore DiveShore Dive | Shore access

Abalone Dive Site Advanced Open Water Rated Crayfish Dive Site Ideal For Snorkelling Outside Port Phillip Reef Dive Site

Diamond Bay
Diamond Bay | © Phil Watson

Depth: 1 metre (3.3 feet) to 10 metres (33 feet)

Level: Advanced Open Water and beyond

Diamond Bay, named after the Diamond jubilee of Queen Victoria, is a popular family beach of Sorrento on the Mornington Peninsula surrounded by impressive sandstone cliffs.

Ideal Conditions:
As an ocean beach Diamond Bay is affected by rips, currents, swell and strong winds and can be very dangerous. To dive here there must be very little to no swell and if any winds, a northerly. Be aware that conditions here can change very quickly also.

What To Expect:
First off, to get to this dive site, which is amazing and not often dived, there is a bit of a walk. Over sand dunes and down stairs, so this may not be for everyone, but if you have a good set of legs on you it is well worth it. It's about 130 m from the car park with the last 50 metres consisting of stairs and a walk across the soft sand of the beach.

It has many rock ledges and overhangs, kelp beds, reefs and small walls. In these is a variety of life including the odd crayfish! You'll also find old wives, boarfish, abalone, and schooling fish.

Another thing to be mindful is of the visibility, it can change quite quickly with the swell as its a sandy bottom. It advisable to go with someone who has been before also to come to the surface to check conditions and for navigational purposes every once in a while.

Diamond Bay Ocean Beach | Credit: David Bryant, Seapics

Now you can walk straight in from the stairs though you'll probably find more and avoid just looking at sand if you head over to side and swim towards either point. Once you get about half way along the bay is where the dive really starts and also begins to deepen. You'll find some bommies and kelp forest just before the point on the right hand side — the direction usually taken.

Diamond Bay is a spectacular dive site but not often diveable. This site is more protected than other Mornington Peninsula Back Beach dive sites so when others are too rough this site can be okay.

Diamond Bay Cave
Diamond Bay Cave | © Phil Watson

Awesome looking landscape with lots of kelp, gullies, interesting rock formations and overhangs due to the surf pounding at the rocks. Not much macro life but you can find lots of crayfish and abalone (so bring measuring device if you want to catch some), wrasse, sharks including catsharks and Port Jacksons and lots of leatherjackets.

Viz can be bad close to shore but clears up the further out you go if the weather is good. Weather can turn bad quickly so it can be helpful to check on conditions now and again throughout the dive. There are often rock fisherman on the east side of the bay on the cliff face or shallow rock ledge on the west so beware of their fishing lines.

If you're lucky enough to dive here on the right day everyone will be jealous. There aren't many facilities here so make sure you have everything you need including dive flag, knife, SMB and possibly a catch bag!

Access: Via shore down steep stairs from carpark.

Facilities: Free park - fairly small so busy in summer.

Weather Required: Very little swell (less than 6 ft, with periods of 10s or more) which generally means 3-4 days of N to NE winds prior to diving here.

See WillyWeather as a guide for the tide times and the height of the tide.

Location: Sorrento Back Beaches
MELWAY Ref: Page 156 B12.

See also, Parks Victoria: Diamond Bay.

Diamond Bay is just a 10 minute drive from The Scuba Doctor Dive Shop. Please drop in and catch up with us before and/or after your dive.

Divers have the opportunity to catch crayfish (Southern Rock Lobster) at this dive site. Remember your catch bag, current Victorian Recreational Fishing Licence, rock lobster measure, and cray tags. Please abide by all current fishing regulations if you intend to catch crays. See How To Catch Crayfish for practical cray hunting advice from The Scuba Doctor.

Divers have the opportunity to catch abalone at this dive site. Remember your catch bag, legal abalone tool, current Victorian Recreational Fishing Licence, and abalone measure. Please abide by all current fishing regulations if you intend to catch abalone. See How to Catch Abalone for practical abalone hunting advice from The Scuba Doctor.

Always keep an eye on sea conditions throughout any dive on the Back Beaches of the Mornington Peninsula. Please read the warnings on the web page Diving the Back Beaches before diving or snorkelling this site.

Latitude: 38° 21.246′ S   (38.354105° S / 38° 21′ 14.78″ S)
Longitude: 144° 44.534′ E   (144.742234° E / 144° 44′ 32.04″ E)

Datum: WGS84 | Google Map
Added: 2012-07-22 01:00:00 GMT, Last updated: 2019-05-31 01:31:53 GMT
Source: Google Earth
Nearest Neighbour: Jubilee Point, 573 m, bearing 256°, WSW
Depth: 1 to 10 m.

DISCLAIMER: No claim is made by The Scuba Doctor as to the accuracy of the dive site coordinates listed here. Should anyone decide to use these GPS marks to locate and dive on a site, they do so entirely at their own risk. Always verify against other sources.

The marks come from numerous sources including commercial operators, independent dive clubs, reference works, and active divers. Some are known to be accurate, while others may not be. Some GPS marks may even have come from maps using the AGD66 datum, and thus may need be converted to the WGS84 datum. To distinguish between the possible accuracy of the dive site marks, we've tried to give each mark a source of GPS, Google Earth, or unknown.

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— Old diver's proverb