A terrible discovery was filmed by a fisherman off the coast of Costa Rica, when he caught a fish and cut it after hauling it on his boat.
The fisherman said he thought the fish may have been unwell and wanted to examine what was causing the sickness.
The Dolphinfish was filled with plastic lids, tops, a comb and a lighter among other things that were pulled out of its insides.
Moral of the story? STOP LITTERING! It's making the fish sick...and filling them up with plastic.