Isla Capitan almost disappears at high tide. I took this photo at low tide. You can see volcanic rock above the water line, and a narrow strip of sand and a few bushes peeking on the right side of the island.
This island is very beneficial for Tamarindo, as the southern end of the bay to the right of this photo is protected from the full force of the Pacific Ocean's wave. It is this sheltering from the island and reef that allows fishing boats and excursion tour boats to be moored in Tamarindo Bay.