Only about 1,000 sperm whales are left in the Mediterranean, and they feed near waters flooded by the greenhouse industry. Acre after acre of farmland in southern Spain is covered in reams of plastic sheeting to produce the perfect growing conditions for year round fruit and vegetables. Due to poor waste disposal, this plastic ends up floating in the Mediterranean.
http://action.sumofus.org/a/sperm-whale-plastic-tesco/4/2/?sub=fb