Authorities say 15-year-old Tyler Madoff, a student at Scarsdale High School, was part of a kayak tour group that set shore on the Big Island.
Madoff and another boy were resting in a tide pool Wednesday when a series of waves pulled them off the beach.
That second teenager was rescued and remains hospitalized in critical condition.
WAKE UP WITH EYEWITNESS NEWS! Click here to download the WABC Eyewitness News Alarm Clock app from iTunes. or search WABC or 7online in the app store.
Get Eyewitness News Delivered