Crossing Weihai Bay: Dr. Zhang's secret (2/2)

Dr. Charles Zhang's secret on swimming across the Weihai Bay (2/2): The direction of the ocean currents is also critical, as swimming against the current can significantly increase the difficulty. Therefore, understanding the tide conditions on the day of the swim is essential. Additionally, marine life such as jellyfish and the extremely rare presence of sharks could pose a threat to swimmers, so proper protective measures must be in place.