Best for diving & snorkeling

From bath-warm reefs you can snorkel in flippers to bucket-list pelagic dives only experienced divers should attempt — picked by water temperature, visibility, marine life, and the months that actually deliver.

Before you book

Visibility varies massively by season — peak isn't always summer (Galápagos is best Jun-Sep, the cold-water months).
Cage diving (great whites, tigers) requires a dedicated trip; book the operator months ahead.
Decompression chambers are 4-12 hours from many remote sites — diving insurance with evacuation cover is essential.
Beginners can certify in 3-4 days (PADI Open Water) — book pool sessions before departure to save vacation time.

12 best destinations

Raja Ampat, Indonesia

Oct-Apr

Most biodiverse marine ecosystem on Earth — 1,400+ fish species in one regency.

Key fact: Visibility 30m+ in dry season. Liveaboards from Sorong run $300-500/night for 7-night trips.

Sipadan, Malaysia

Apr-Dec

Wall dive on a sunken volcano. Turtles + barracudas + jacks in tornado schools.

Key fact: Permit-limited to 176 divers/day. Book 6+ months ahead.

Galápagos, Ecuador

Jun-Sep (cold, big animals)

Hammerheads, sea lions, marine iguanas. Advanced divers — strong currents.

Key fact: Liveaboards required for Wolf + Darwin sites; $5000-8000 for 7 nights.

Cocos Island, Costa Rica

Jun-Nov (rainy, more sharks)

Hammerhead schools, whale sharks, dolphins. Boat-only.

Key fact: 36-hour boat ride from mainland. Advanced cert required.

Bonaire

Year-round (best Apr-Nov)

Easiest world-class shore diving. Drive your truck up, gear up, walk in.

Key fact: Most marine park dive sites are shore-accessible. Annual marine park fee $40.

Maldives

Nov-Apr (dry, low currents)

Atoll diving with mantas, whale sharks, drift dives. Resort or liveaboard.

Key fact: Northern atolls (Baa) best for mantas Jun-Nov; southern (Ari) best Nov-Apr.

Great Barrier Reef, Australia

Jun-Oct (best visibility)

Iconic, accessible, suitable for all levels. Cairns + Port Douglas hubs.

Key fact: Climate change has hit hard — choose operators supporting reef restoration.

Palau

Nov-Apr

Jellyfish Lake + Blue Corner shark wall. Pristine WWII wrecks.

Key fact: Liveaboards from $4000-6000 for 7 nights.

Red Sea (Egypt)

Mar-May, Sep-Nov

Affordable, year-round warm water, accessible from Europe. Wreck dives + coral.

Key fact: SS Thistlegorm wreck + Brothers Islands are iconic. Daily boat trips $80-150.

#10

Fiji

Apr-Oct

Soft coral capital of the world. Friendly currents for novices.

Key fact: Resort-based diving in Yasawa + Mamanuca chains. $1500-3000 week packages.

#11

Komodo, Indonesia

Apr-Nov

Mantas, sharks, dragons. Strong currents — intermediate+.

Key fact: Liveaboards from Labuan Bajo cheaper than Raja Ampat ($150-300/night).

#12

Belize Blue Hole

Apr-Jun (calmest)

Iconic sinkhole on the world's second-largest barrier reef.

Key fact: Advanced cert required (40m+). Surface diving on the reef accessible to all.