TURTLES

Between November and January, female Green and Loggerhead Turtles begin to emerge from the water to lay their eggs.  The eggs are incubated in sand nests until they are ready to hatch.  Hatching takes place between January and April.
http://mar.coastnet.net.au/~ladyelliot/
activities.html

BIRDS

At the same time as the turtles are laying, approximately 83 species of sea and wading birds visit the island on their migratory journey.  Some stay and feed, some rest and some stay for the breeding season.  Lady Elliot Island boasts more species of breeding birds than any other island on the Great Barrier Reef.  The most noted of these is the endangered Red Tailed Tropic Bird of which several pairs return each year to their established nesting sites. Sourced from:
http://mar.coastnet.net.au/
~ladyelliot/activities.html

DIVING
The island boasts a large number of dive locations where visibility averages 25 meters and water temperature averages 23oC year round. Sourced from:  http://mar.coastnet.net.au/~ladyelliot/diving.html