A young Staten Island man drowned during a rafting trip through the Delaware River, officials announced.

Christopher Rivera, 20, disappeared while swimming in the Karamac Bridge abutments, between New Jersey and Pennsylvania, around 4 p.m. Tuesday, after other group members saw him struggling to fight against the current, according to a National Park Service press release from late Tuesday.

His body was recovered approximately four hours later along the New Jersey shoreline.

Officials said Rivera was not wearing a life jacket at the time, and urged anyone swimming or spending time in the water to remember to wear their US Coast Guard-approved preserver.

“The current can be swift and strong despite the calm appearance and river depths can change rapidly going from knee-deep to over your head in a single step,” the release states. “Wearing a life jacket can save your life.”