I actually made a semi study of the effects of pollution on turtle populations, mainly sea turtles. The loggerhead is a big, 4' leathery shelled sea turtle. Unfortunately, our life style is killing off most of the sea turtles. I got the opportunity to sea three while diving in Hawaii, and one while on a dive in Jamaica. They are truly beautiful to behold in their natural state. They primarily eat jellyfish, so don't toss garbage bags in the ocean, it looks like a jelly fish and the turtles choke on it. My studies of turtles made me feel guilty, back in my youth, with the afore mentioned turtle trapping friend, we put a dent in Illinois turtle population. We were out plinking snakes when we spied a fellow setting turtle traps. Mind you, trapping them was illegal at the time. We watched and noted locations. The next few weeks, we got off school and ran the guys traps. Wrong on many levels, especially since we were using his boat. It took this fellow close to a month to get wise to us. We were out in his boat when we noticed an inordinate amount of water in the boat. The fellow had taken his plug. We had to swim to shore, but I doubt this fellow got his boat from where it sank. My buddy came back the next day and the traps were gone. Thus ended our turtle trapping.