The reason I ask is because, not long ago I went to the beach near the Marina in Kona and there I saw several armed guards, with tasers also, patrolling the beach while what looks exactly like a Chinese trawler worked within swimming distance from the shore. My companion recognized the danger and refused to stay. I recognized the Chinese trawler from a recent YouTube video on the subject of the Chinese military/fishing combination. Also the armed guard reminded me of Chinese uniformed forces. He was actively patrolling, probably looking for cameras.
Why close beaches?