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Many whales often because of disease, parasites, viruses and a series of reasons, can not receive the echo waves in shallow waters and can not determine their location, resulting in low tide stranded on the coast, whale collective often lead to death in large quantities on the coast . To avoid this situation, we will cover shallow areas sonic device, at low tide fish within the allowed range of sonic interference region haste to leave.
Xiang Hui Lin,
Qiao Wu Lin,
Hang Yu Li,
Xing Min Lin,