At 66, Hong Kong diver Harry Chan Tin-ming could be seeking a serene life after retirement. But instead, he is fighting a war against what he calls the oceans’ silent killers – ghost nets, or abandoned fishing gear that trap marine life.About twice a month, Chan, a hearty, grizzled man with an energy that belies his years, dons his dive suit and dips down into the waters, hunting for nets that endanger not only animals but humans.With 30 years of diving experience under his belt, Chan intends…
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