I took a tape to the picture, measured the hole in the white kayak at 1 1/4". Then, measure my chair and the hole between the arms is 21". That makes the scale approximately 1" = 2'. So, you measure the croc at 8 1/8" means he's approximately 16' long. Allowing for the nature of photography where closer objects appear larger than the objects farther away, I put him at approximately 14'.