It’s Not What You Think
To be honest, this odd chunk of flesh on a beach does resemble the shape of a hideous foot. But it isn’t what you think it is. It’s still a body part, but it comes from a seal rather than some frightening monster.
It’s a hairless seal flipper, according to the web. We can only speculate as to how a poor seal lost it. Probably because of a hungry predator that failed to aim its bite quite as well as intended. In any case, it’s definitely an odd thing to come upon on your daily stroll.