Meet the site
Cape Donington marks the eastern side of the entrance to Boston Bay, within Lincoln National Park. The Marine Life Society describes generally sheltered shores with small granite and limestone caves and ledges in 2-4 m, with strapweed (Ecklonia radiata) and bushy brown algae, and depths to about 12 m. Boats launch from Kirton Point Caravan Park. Offshore, Donnington Reef rises 3 m from the bottom about 550 m north-north-west of the cape, offering shallow granite reef diving with small ledges, overhangs and crevices. These reefs host a good cross-section of lower Eyre Peninsula temperate life: magpie perch, old wives, blue devils, wrasse, leatherjackets, sweep and western blue groper, with abalone, crabs, sea stars and nudibranchs in the crevices. The sheltered position makes Cape Donington a useful site when Thorny Passage and the outer islands are rough, and it pairs perfectly with the Degei wreck off nearby Donington Island. The shallow shore ledges also suit snorkellers. It suits Open Water divers and snorkellers with a boat, and is a good introduction to the granite-reef diving of Lincoln National Park. The cape's lighthouse and the park's camping areas at nearby bays make it possible to combine diving with a few days in the park, and snorkellers in the party can explore the shallow ledges while divers do the deeper reef. Currents are usually mild inside the bay entrance but can pick up off the tip of the cape on spring tides, so stay close to the reef and plan to return to the boat with gas in reserve. Visibility tends to be better here than inside Boston Bay proper.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Cape Donington is recorded as Reef in Eyre Peninsula. The listed access is boat. 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.
- Current and timing
- Ask how the operator assesses the current window for the actual route. Historical tide notes are not a departure instruction.
- Other water users
- Ask about vessel activity, exclusion areas and the agreed surface arrangements.
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 Cape Donington 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 Cape Donington 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
Magpie perch, old wives, southern blue devils, wrasse, leatherjackets, sweep, western blue groper, abalone, crabs, sea stars, nudibranchs, Ecklonia kelp, brown algae
Location
Generally sheltered granite and limestone shores at Cape Donington at the entrance to Boston Bay, with small caves and ledges in 2-12 m and Donnington Reef, a 3 m-high granite reef 550 m NNW of the cape.
Facilities nearby
Kirton Point ramp; Lincoln National Park facilities (camping, toilets) by road.
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.