The beach of Ostional is the scenery for a rarely-seen biological wonder. Around the third quarter of the moon, hundreds, and sometimes hundreds of thousands of sea turtles come to one specific mile of beach at Ostional to dig their eggs into the black, volcanic sand.  The beach of Ostional is the scenery for a rarely-seen biological wonder. Around the third quarter of the moon, hundreds, and sometimes hundreds of thousands of sea turtles come to one