 At Malapascua Island in the Philippines, pelagic threshers have been observed regularly visiting cleaning stations occupied by cleaner wrasses ("Labroides dimidiatus" and "Thalassoma lunare"), during which they exhibit characteristic behaviors to facilitate the cleaning interaction.These visits occur more frequently early in the morning, and may be why these normally oceanic sharks are sometimes encountered in shallow water.Little information is available on the feeding ecology of the pelagic thresher.