Thailand
Head to the south of Thailand to dive with turtles. The hawksbill and green turtles are the most common species that can be found feeding on green algae that grows on the coral reefs off the coast of Phuket and the islands, such as Koh Phi Phi and Surin. When diving in the presence of turtles do not chase them as this can cause them to become frightened and stay away from the surface of the water despite their need to breathe.
Greece
Conservation projects have been set up in parts of Greece to protect beaches where turtles come to nest between the months of May and August. This includes the southern bay of Lakonikos where volunteers can help to collect data about the loggerhead turtle's nesting activity in the area. Visiting Lakonikos may give you the opportunity to witness turtles coming to the beach to lay eggs.
United States
From June to July in Florida, a small cash donation to the Sea Turtle Preservation Society will reward you with a guided walk around protected turtle nesting sights in the area. Avoid stepping on any areas where the sand has been disturbed as this could be a nest. Alternatively, head to Laniakea beach in Oahu, Hawaii, where turtles can be found basking during the daytime. Turtles can be found here throughout the year. This beach is open to the public and provides visitors with the opportunity to observe wild turtles in their natural habitat.
Fiji
The leatherback, hawksbill and green turtles can be found nesting on beaches around the island of Fiji, where you can witness turtles coming ashore between the months of November to February. Turtles generally come out of the water to nest during the night as this is the time when they are less likely to be attacked by land mammals. A torch fitted with a red bulb will allow you to see the turtles. Avoid white light as this can disturb them.