The turtles strongly favour narrow lengths of plastic in natural colours like green and black, rather than debris of other shapes and colours, the study found.
Scientists from the University of Exeter and the Society for the Protection of Turtles (Cyprus) examined the guts of turtles found washed up on beaches in Cyprus.
Plastic - Turtles - Tract - Found - Pieces
Plastic was found in all turtles whose full gastrointestinal tract could be examined, with one found to contain 183 pieces.
The study could not determine what, if any, role the plastic had in the turtles' deaths. Most had likely died as a result of interaction with fishing nets.
Research - Leatherback - Plastic - Prey - Thing
"Previous research has suggested leatherback turtles eat plastic that resembles their jellyfish prey, and we wanted to know whether a similar thing might be happening with green turtles," said Dr Emily Duncan, of the University of Exeter.
"Sea turtles are primarily visual predators -- able to choose foods by size and shape -- and in this study we found strong evidence that green turtles favour plastic of certain sizes, shapes and colours.
Baseline - Debris - Beaches - Plastic - Turtles
"Compared to a baseline of plastic debris on beaches, the plastic we found in these turtles suggests they favour threads and sheets that are black, clear or green.
"The sources of this plastic might include things...
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