Marine Mammals and Sonar - Naval Sonar-linked Incidents

Naval Sonar-linked Incidents

Worldwide, use of active sonar has been linked to about 50 marine mammal strandings between 1996 and 2006. In all of these occurrences, there were other contributing factors, such as unusual (steep and complex) underwater geoqraphy, limited egress routes, and a specific species of marine mammal — beaked whales — that are suspected to be more sensitive to sound than other marine mammals.

—Rear Admiral Lawrence Rice

Date Location Species and Number Naval Activity Reference
1963-05 Gulf of Genoa, Italy Cuvier’s beaked whale (15) stranded Naval maneuvers
1988-11 Canary Islands Cuvier’s beaked whale (12+) Gervais' beaked whale (1) stranded FLOTA 88 exercise
1989-10 Canary Islands Cuvier's beaked whale (15+), Gervais' beaked whale (3), Blainville's beaked whale (2) stranded CANAREX 89 exercise
1991-12 Canary Islands Cuvier's beaked whale (2) stranded SINKEX 91 exercise
1996-05-12 Gulf of Kyparissia, Greece Cuvier's beaked whale (12) stranded NATO Shallow Water Acoustic Classification exercise
1998-07 Kauai, Hawaii beaked whale (1), sperm whale (1) stranded RIMPAC 98 exercise
1999-10 U.S. Virgin Islands and Puerto Rico Cuvier’s beaked whale (4) stranded COMPTUEX exercise
2000-03-15 Bahamas Cuvier’s beaked whale (9), Blainville’s beaked whale (3), beaked whale spp (2), Minke whale (2), Atlantic spotted dolphin (1) stranded Naval MFA
2000-05-10 Madeira Cuvier’s beaked whale (3) stranded NATO Linked Seas 2000 and MFA
2002-09 Canary Islands Cuvier’s beaked whale (9), Gervais’ beaked whale (1), Blainville’s beaked whale (1), beaked whale spp. (3) stranded Neo Tapon 2002 exercise and MFA
2003-05 Haro Strait, Washington Harbor porpoise (14), Dall’s porpoise (1) Orca avoidance “stampede” U.S.S. Shoup transiting while using MFA (AN/SQS-53C)
2004-07 Kauai, Hawaii Melon-headed whale (~200) avoidance “stampede” RIMPAC 04 exercise with MFA
2004-07-22 Canary Islands Cuvier’s beaked whale (4) stranded Majestic Eagle 04 exercise
2005-10-25 Marion Bay, Tasmania Long-finned pilot whales (145) stranded Two minesweepers using active sonar
2006-01-26 Almeira Coast, Spain Cuvier's beaked whale (4) stranded HMS Kent using active MF sonar
2008-06 Cornwall, UK Dolphins (26) stranded Naval exercise but no ship sonar in use except HF hydrographic sonar on HMS Enterprise

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