Port Douglas

Visitors do not need individual permits when traveling with licensed operators. Commercial operators hold Marine Park permits and collect the Environmental Management Charge (EMC), commonly AUD $8 per person per day. Operators also follow marine park zoning and no-anchoring rules to protect coral. If chartering privately, you must comply with zoning and mooring regulations and avoid anchoring on coral.

Yes. Low Isles offers sandy beach entries with coral gardens close to shore, ideal for first-timers. Outer reef platforms provide sheltered snorkel lagoons, stairs, life guards, and guided sessions with marine biologists. Stinger suits are provided in Nov-May and recommended year-round. Choose morning trips for calmer conditions, and always follow the crew’s instructions and stay within roped areas when provided.

The most reliable window is June to July. Endorsed liveaboards operate under a specific Code of Practice that manages in-water swims using surface ropes and minimum approach rules. Trips depart primarily from Cairns with transfers, and sell out months in advance. Encounters are snorkel-based and are never guaranteed, but multiple approaches over several days are common when whales are present.

Box jellyfish and Irukandji can occur, especially Nov-May. Wear stinger suits, heed lifeguards, and carry vinegar onboard for first aid. Always swim between the flags on patrolled beaches. Offshore operators supply suits and monitor conditions. If stung, notify crew immediately for treatment and observation. Many operators recommend suits year-round as a precaution.

Many day boats permit breath-hold within snorkel zones under lookout supervision, but policies vary. Always advise the crew, use a freedive float and flag, and stay within boat perimeters. Depth access is typically along reef edges near moorings, with common working depths of 10 m to 20 m. For line training or coaching, coordinate with Cairns-based schools or join dedicated charters.

Outer reefs commonly spawn 1-6 nights after the November full moon, sometimes extending into December. Inshore reefs may spawn earlier after the October full moon. Operators schedule special night dives or extended evening trips on likely dates, though exact timing depends on water temperature, moon phase, and local conditions.

Bring certification card, dive computer, SMB, mask with reliable defog, and a 3 mm suit for extended dive times or winter. Operators provide tanks, weights, and often stinger suits in Nov-May. Add reef-safe sunscreen, a hat, and a dry layer for the ride home. If you are prone to motion sickness, take precautions before boarding.

Crocodiles inhabit estuaries, rivers, and mangroves. Do not swim in creeks or river mouths and always obey Crocwise signage. Four Mile Beach is patrolled seasonally with stinger enclosures. Offshore coral reefs and cays are not typical crocodile habitats, but caution near any coastal waterway is advised, especially at dawn or dusk and after rains.