A relatively new user has created the tag fins. Ordinarily I would not notice this, or much care, but he has twice edited a question of mine to add his new tag, which I have twice rejected.
See Pros and Cons of Different Types of Snorkeling Fins. I think the tag gear is sufficient. If we add fins as a tag, why not add goggles, defogging agents, wet suits, underwater cameras, waterproof watches, sunscreen, and so on? Oops: I see that we do have several of these as tags. I suggest merging them into gear (seriously).
If fins had been a well established tag, I would not have had a problem, but, as far as I can see, it has been very recently created by this user. See (1) this; and (2) this one and (3) The third one.
I thought our practice was to merge little used tags into an umbrella tag (e.g. gear), and to create new tags very sparingly.