[ad_1] Dangerous rip currents cause Gulf Coast drownings Dangerous rip currents responsible for several drownings at Gulf Coast beaches 02:05 The U.S. Coast Guard said Thursday it is searching for a U.S. Marine who went swimming in high surf off Puerto Rico’s northeast coast while on vacation, while another American tourist died in a separate incident in the dangerous surf. Officials identified the missing Marine as 26-year-old Samuel Wanjiru from Massachusetts and said he was visiting the island with his family. He went missing Wednesday afternoon after going into the…