A diving expedition in the Philippines took a grisly turn on Thursday, when two of its members became separated from the group and were later found dead, one mangled after an apparent shark attack.

Two Russians died while scuba diving around Verde Island, Batangas on Thursday, the Philippine Coast Guard (PCG) said Friday. In a statement, the PCG said Coast Guard Station (CGS) Batangas commander Captain Airland Lapitan reported that four Russians were scuba diving in a portion of Pulong Bato when a sudden strong current washed them away.

Officials say that the duo - who were part of a group of four - were separated by strong undercurrents and swept into the path of a shiver of ravenous sharks near Batangas in the Philippines