Meet the site
Sloping Island is a 117-hectare nature reserve off the north-western Tasman Peninsula, part of the Sloping Island group that includes the adjacent Sloping Reef. Go Dive Tasmania lists it as one of the few diveable giant kelp forests near Hobart, in 5-12 m and suitable for all certified divers, with seahorses and schooling fish. That makes it an important site: giant kelp has declined by around 95 per cent on Tasmania's east coast since the mid-twentieth century, and stands close enough to Hobart for a half-day trip are rare. Diving through a healthy Macrocystis forest is a special experience, with golden light filtering through the canopy and fish moving among the stipes. Big-belly seahorses cling to the kelp and understorey algae, while schools of bastard trumpeter, wrasse, leatherjackets and juvenile fish shelter in the forest. The older Marine Life Network guide describes a reef about 100 m long and 50 m wide on the south side of the island in 4-8 m, attractive with reef fish and colourful sponge growths, and notes shallow reefs between Sloping Island and the mainland. The island has ruins of early settlement foundations ashore, though little remains. The shallow depth means long, relaxed dives suitable for beginners and photographers. Kelp condition varies with summer water temperatures, so ask the operator about its current state. Treat the kelp gently – avoid pulling on stipes or kicking holdfasts – and never land on the island, which protects nesting seabirds. Go Dive Tasmania's guided trips remove the logistics for visitors without their own boat.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Sloping Island Kelp Forest is recorded as Kelp Forest 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.
- Lines and obstructions
- Discuss any known entanglement concerns and the suitability of the planned area.
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 Sloping Island Kelp Forest 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 Sloping Island Kelp Forest 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
Giant kelp (Macrocystis pyrifera), big-belly seahorses, bastard trumpeter, wrasse, leatherjackets, juvenile fish, sponges, sea stars
Location
Small nature-reserve island (117 ha) off the north-west Tasman Peninsula near Lime Bay, with one of the few diveable giant kelp forests close to Hobart.
Facilities nearby
Boat ramps and facilities at Dunalley and Primrose Sands; fills in 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
godivetas.com.aumarinelife.org.auen.wikipedia.orgabc.net.auRecord updated 26 Sept 2026. Source claims are being reviewed.