Yes. That is a very large and very dead sea turtle on the beach in Kamakura. One guy, who was apparently called in to deal with it, dug a hole and then proceed to dissect the entire turtle and then bury the pieces of it in a very shallow grave on the beach. It was a very long process involving two very large knives and took place while we ate dinner. All we wanted was an ocean view and we got a "show" with it.
Besides stumbling upon something you would never even imagine witnessing in life, the day proved to be very fruitful. With in 30 minutes and at one location, I was able to not only finally find postcards in Japan, but also find something that cost under 1$!. For 25 cents, I was able to go inside a very large budda. Even though the inside was not much of anything, I would have paid it just to stand at the door because I finally found something cheap.