A catamaran carrying 98 tourists and 10 crew members sank off Costa Rica on Thursday, leaving at least four people dead while rescuers saved dozens from the sea. Rescuers have plucked 94 people from the Pacific waters so far, fire brigade director Hector Chaves told Radio Monumental. The identities of the victims have not been disclosed so far. Survivors "are being treated by medical personnel. Many have problems like hypothermia and panic attacks," Chaves said.