Meet the site
Wedge Island sits at the entrance to Wedge Bay on the western side of the Tasman Peninsula, facing Storm Bay. The Marine Life Network guide lists the exposed western end in 5-9 m, with boulders, crevices and a weed garden, and records bastard trumpeter, banded morwong and wrasse. It is a shallow, easy boat dive: the boulders are stacked on a gently sloping bottom, and the cracks between them shelter fish and invertebrates. The weed garden supports a variety of brown and red algae, and the fish are typical of Storm Bay reefs – bastard trumpeter in small schools, banded morwong resting on the rocks, blue-throated and purple wrasse, leatherjackets and occasional rock lobster. Because it faces the open bay, the western end is the most exposed part of the island, so plan the dive for a calm day or use the more sheltered eastern side when there is a westerly breeze. The site suits newer divers and snorkellers with a boat, and families staying at White Beach or Nubeena. The western side of the Tasman Peninsula is an important complement to Eaglehawk Neck: when easterly weather blows out the east coast, Wedge Bay and Storm Bay are often calm. Visibility is usually lower than on the east coast. The island is a nature reserve for seabirds; do not land, and avoid disturbing nesting birds. Combine Wedge Island with nearby Fosters Rock or the Brothers and Sisters Rocks at the head of Wedge Bay for a day of relaxed diving.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Wedge Island is recorded as Island in Tasman Peninsula. The listed access is boat (day trip). Confirm the actual meeting point, route and permission to visit; a map pin does not establish any of these.
Topics flagged by the stored research
These are questions prompted by the existing notes, not a verified or complete hazard assessment.
- Other water users
- Ask about vessel activity, exclusion areas and the agreed surface arrangements.
- Water movement
- Ask how swell and local exposure affect the proposed entry, exit and route.
Historical access notes exist for this record, but have not been independently verified for current use. Request current directions from the operator or site manager rather than following an old entry description.
Questions, answered
Is Wedge Island suitable for my certification?
The record lists Open Water. That does not establish suitability for every route or day. Share your training, recent experience and equipment needs with the operator and ask about the specific proposed dive.
Can I book Wedge Island through YouDive?
YouDive is an independent research directory. Contact an operator directly to confirm whether it currently runs the trip, the inclusions and the booking terms.
What you might see
Bastard trumpeter, banded morwong, blue-throated wrasse, purple wrasse, leatherjackets, rock lobster, brown and red algae, sea stars
Location
Small island off the western Tasman Peninsula at the entrance to Wedge Bay, with boulder reef at its exposed western end.
Facilities nearby
Boat ramps and toilets at White Beach and Nubeena; fuel and store at Nubeena; no fills on the western side (nearest Eaglehawk Neck or Hobart).
Before you make plans
Conditions, access and operator schedules can change. This is a location guide, not a dive plan. Ask a local operator about current conditions and suitability for your training and experience.
Sources & further reading
marinelife.org.auRecord updated 26 Sept 2026. Source claims are being reviewed.