Entanglement

Entanglement occurs when animals become caught in floating garbage, or use pieces of trash to build their nests and shelters. In Canada, water birds and marine mammals are most at risk of entanglement, though sea turtles and fish have also been found ensnared in litter. Because of their curious and playful nature, sea lions and seals are particularly at risk. They often approach and actively explore debris in their environment, and once trapped are rarely able to free themselves.

Entanglement can restrict movement, cause open sores, and in some cases strangle animals. Terrestrial species as well as aquatic ones are vulnerable to becoming trapped in debris. Foxes, raccoons, deer and rabbits have been found caught in abandoned fishing line, traps and nets. Some of the most dangerous aquatic debris items are plastic strapping bands, six-pack rings, and monofilament fishing line.

Canadian Case Study

In September 1999, a California sea lion came ashore at Race Rocks, a marine protected area just south of Vancouver Island, with a plastic fish net binding hoop around its neck. Because of the lie of its outer guard hairs, the sea lion was unable to free itself. Friction from the hoop had opened a large wound on the animal’s neck.

In November of the same year, a second sea lion appeared at Race Rocks similarly entangled.

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