Table 1: Summary of incidents of ingestion by cetaceans of plastics and other debris reported in Walker and Coe between 1963 and 1986 with notes indicating where ingestion was indicated to be of significance [7].

SpeciesNumber of incidentsLocationsNotes

Sperm whale, Physeter macrocephalus 3Florence, OR, New Jersey and NewfoundlandOne animal of 38 examined from a mass stranding in Oregon had one liter of tightly packed trawl net in its stomach
Dwarf sperm whale, Kogia sima1Corolla, NC
Pygmy sperm whale, Kogia breviceps 3Sullivan’s Island, SC, Galveston, TX, and Brevard Co., FloridaThe Texas animal had “pounds of plastic bags clogging its stomach chambers”
Cuvier’s beaked whale, Ziphius cavirostris,3San Diego, CA, Assawoman, VA and Seaford, VA
Blainville’s beaked whale, Mesoplodon densirostris 1East Hampton, NY
Gervais’ beaked whale, Mesoplodon europaeus 2Hatteras Island, NC and Cape May, NJThe NJ animal had its stomach full of plastic
Short-finned pilot whale, Globicephala macrorhynchus 1Corolla, NC
Rough-toothed dolphin, Steno bredanensis 3Maui, HI and 2 from Sandbridge, VA
Pacific white-sided dolphin, Lagenorhynchus obliquidens 4Three from Santa Monica, CA, one from Long Beach, CAThe forestomach of the Long Beach animal was half full of four plastic bags, two plastic bottle caps, and various organic materials
Common dolphin, Delphinus delphis 4Two from Los Angeles County, CA, one from Malibu, CA, and the other from Hermosa Beach, CAThe LA County animal had one partial red balloon ( cm), one piece of clear plastic ( cm), and kelp fronds in its stomach
Bottlenose dolphin, Tursiops truncatus 9All from the California coastal population—stranded on various CA shoresAlong with other organic and plastic debris, three of the animals contained hooks
Risso’s dolphin, Grampus griseus 2Martha’s Vineyard, MA and Manhattan Beach, CAThe animal from MA was recorded as having a plastic bag in its throat
Striped dolphin, Stenella coeruleoalba 1Cape Point, NC
Northern right whale dolphin, Lissodelphis borealis 2Los Angeles County, CA and Santa Monica, CA
Harbour porpoise, Phocoena phocoena. 1Corolla, NC
Dall’s porpoise, Phocoenoides dalli 3Venice Beach, CA, and two from Santa Barbara, CAThe Venice Beach animal had its stomach “jammed with debris” including 13 pieces of clear plastic sheet, 3 heavy clear plastic bags, 2 plastic bread bags, and two plastic sandwich bags