Oman
Hawksbill turtles nest among nine islands whose coral reads clear from the surface.
The boat anchors over coral close enough to the surface to read, and nothing on it is touched. The nine islands stay low and pale behind, closed to landings from May to October so the hawksbills that nest in early summer are left alone.
The Daymaniyat Islands lie low off the Muscat coast, nine islands of pale rock over coral gardens clear enough to read from the surface. The whole group is a nature reserve: hawksbill turtles dig their nests here from May to July, and landings close from May to October so the islands are left to them. Licensed boats carry the Environment Authority permit and the day, with snorkel and dive sites picked to the sea. Nothing is touched underwater, which is the reserve working as designed.
Couple
A boat day with the crossing, the reef and lunch on deck built in; the crew picks the anchorage and the two of you take the water at your own pace.
Friends
Snorkellers and divers share the same boat here, so a mixed group gets one day out with the site matched to each ability.
Full-day boats grill a barbecue lunch aboard between snorkel stops, with refreshments through the day.
Back at the marina, Muscat's fish restaurants finish the day the reserve began.

Polignano a Mare
Italy
Houses perched on a cliff edge above a cove where divers leap from old-town rocks.

Hamata
Egypt
Spinner dolphins corkscrewing around the dawn boats, the southernmost Red Sea reefs untouched below.

Cassis
France
White limestone calanques plunging into water so blue it silences the conversation on the boat.

Isla Cozumel
Mexico
Caribbean currents carry divers along protected reef walls west of Cozumel.

Wahiba Sands
Oman
Burnt-sienna dunes roll to every horizon in a silence that makes your ears ring.

Empty Quarter Edge
Oman
The largest continuous sand desert on Earth begins where Dhofar's gravel plains give out.

Jebel Shams
Oman
The rim path hangs above a thousand metres of air, Egyptian vultures working the thermals below.

Salalah
Oman
Frankincense smoke, coconut palms and monsoon-softened hills meet beside the Arabian Sea.