The Secret Beach on Poda island is a small yet picturesque beach unique for the cave you can climb into that offers a lovely view of the beach and the turquoise water. Don't forget to climb up the second level too after the big cave opening as you see even more of the view from up there!
You can only access this beach on a tour. We paid 2250 baht to take a private 4-island tour from Krabi town and this beach is one of the stops!