I see a few things that jump out.
We assume it's a beach along the ocean b/c of the Surfrider Foundation.... but it could very well be sand next to a freshwater body of water. The turtle could also be sitting in sand under human care as a rehab/rescue. I've seen turtles (sea turtles and FW turtles) in that shape from entanglement. Even had a few manatees come in looking like a figure 8.
When did orange peels become "litter"? And those 'break down' times seem made up.