Gulliver's is the third of Lighthouse Bay's moored regulars and completes the usual rotation with Blizzard Ridge and The Labyrinth. Like its neighbours it is a limestone ridge reef rising from sand at 12–14 m, with coral heads, ledges and overhangs along its margins.

Published descriptions of Gulliver's are thinner than for Blizzard Ridge, but operators describe the marine life as similar: large schools of reef fish, turtles, sea snakes, whitetip reef sharks and wobbegongs, moray eels, lionfish and potato cod, with occasional manta rays and, in winter and spring, humpback whales heard or seen during the dive. Pink soft corals and hard corals decorate the ridge. Its shallow depth and generally benign conditions make it a comfortable first dive of the day or a relaxed second dive after Blizzard Ridge.

The bay's importance rests on its protection: when strong south-westerlies close the west side of Ningaloo and the Muiron Islands, Lighthouse Bay on the lee of the Cape usually stays diveable. That makes Gulliver's and its neighbours the most consistently dived boat sites around Exmouth, and since August 2025 they have taken more traffic because Muiron Islands diving has been paused by Dive Ningaloo after coral bleaching.

It suits all levels from Discover Scuba up. Expect some heatwave coral damage. Look under ledges for wobbegongs and resting whitetips, and scan the sand edges for rays and sea snakes foraging in the open.

Planning notes: Open Water certification is recommended and the site is rated beginner. Expect to spend most of the dive around 11 m, with a maximum of about 14 m. Access is by boat only, and site selection depends on wind, swell and tide on the day. Best season: April–November (whale sharks March–July, humpbacks July–October, mantas year-round). Traffic: popular (weekly charters).

From Exmouth, charters meet at the operator's shopfront or collect divers from accommodation and either launch at Bundegi boat ramp (about 14 km north of town on Murat Road, sealed, 2WD) or travel from Exmouth Marina (Mortimer Road, 2 km south of town). Lighthouse Bay sits just north of Vlamingh Head Lighthouse at the very tip of North West Cape, roughly 30–45 minutes by boat from Bundegi depending on sea state. Operators run double-dive days with a lunch break on board; sites are on public moorings installed to protect the reef, so the boat ties off and divers giant-stride from the back deck.

Lighthouse Bay is on the northern tip of the Cape and is sheltered from the prevailing south to south-westerly swell that hits the western side, which is why it is the fallback when the west side and Muirons are blown out. It becomes rough in strong northerly or north-easterly winds and in the afternoon south-westerly sea breeze that wraps around the Cape (often 15–25 knots from late spring to autumn), so trips run in the morning. Visibility is 5–20 m, dropping around the March–April coral spawn and during plankton blooms.

Cyclone season runs November to April; trips are cancelled for cyclone warnings. Tidal flow is noticeable around the Cape on springs.

Descend the mooring line to the reef base at 12–14 m, swim a circuit along the reef edge in whichever direction keeps any current on the nose for the outbound leg, then return shallower at 8–10 m across the reef top to the mooring for a safety stop.

Dive Ningaloo – double boat dives several days a week, all certification levels including Discover Scuba; Exmouth Dive & Whalesharks Ningaloo – regular Lighthouse Bay trips; Ningaloo Whaleshark Swim (Whalesharks Exmouth) and Ningaloo Whaleshark-N-Dive – Lighthouse Bay dives as weather allows.