. >> goomorning, kids. howeveealsometngt the beach, almi. >> have you seen al? see.lso, over there. over here. see. and you see here. so you see how the sand here and the roots exposed, and see there. >> along the beach are palm trees with their roots exposed from the sand. some have even begun to fall over. in other places, the condition is worse. >> before, it's all sand all the way here. the sand is all the way there, in the rocks. it changed. it changed. the sand was covering the rock, all the way to the stairs, and underneath. >> it's meaning is the sand was gone from here. >> yeah. it slowly is. >> elena has been living on the island for 20 years. she says that it was only around ten years ago that the waves began to erode the sand. during the rainy season between june and october, the waves reach right up the beach. recently, these floods may occur more than ten times a year. sometimes the beaches flooded for up to four hours. the marine science institute at the university of the philippines. dr. miguel fortes is a scientist based here, together with colleague