Travel Challenge: A diving holiday in South-east Asia

Every week we invite competing companies to give us their best deal for a specific holiday. Today: a week's diving holiday in South-east Asia in August. Prices are per person and include flights departing from Heathrow.

Dive Worldwide

£1,629: Sipadan Mabul Resort, Borneo, East Malaysia

Includes Malaysia Airlines flights with daily August departures, transfers, seven nights' full board accommodation and up to three dives per day. "With significant savings on flights, an almost guaranteed chance of seeing turtles and the option to add on a trip to see orang-utans, it's a perfect summer adventure and great value for money," says Sarah Wight at Dive Worldwide (0845 130 6980; diveworldwide.com ).

Dive in Style

£3,085: Wakatobi Dive Resort, Indonesia

Includes Singapore Airlines flights departing 1 August, internal charter flights, transfers, seven nights' full board accommodation, unlimited diving and one night's room only accommodation in Bali. "This is utterly superb: perfect reefs with both hard and soft corals and endless marine life – a sort of underwater Chelsea Flower Show with nature awarded 'best in show'. Described as having the best house reef in the world, there is little I can really add to that, except that the beach is not bad either!" says Tim Simond, founder of Dive in Style (020-7978 0505; diveinstyle.com ).

Ultimate Diving

£1,399: Magic Island Dive Resort, Moalboal, Philippines

Includes Qatar Airways flights departing 18 August, transfers, seven nights' accommodation with breakfast and five days' diving. "Hidden away from the masses, this resort is in the heart of the Philippines' most beautiful dive spots, ideal for encounters with whale sharks to hairy frog fish," says Tom Blake of Ultimate Diving (0800 112 3275; ultimatediving.co.uk ).