Really enjoyed seeing the giant clams - bowled up and no one around but soon an older lady appeared and gave some advice about where to go in the marked area to see clams. Was quite a cross current on the day we were there so had to concentrate on location. Wear a shirt to avoid sunburn! We came in for a rest and then went out again - probably spent 90 minutes snorkeling that day. Cost was $10 tala pp. Clams had fluorescent colours - amazing.