Rangiroa is a laid-back island paradise full of underwater wonders, including abundant sharks. It's the largest coral atoll ...

Here are the most stunning destinations teeming with marine life that are worth visiting if you love to snorkel - or are looking to give it a try.

Chris Lawrence dives to a depth of 100ft in a submarine at the 'seven-star' Patina Maldives, to see the Ali Giri reef. He ...