Looks like a dolphin fin. According to ChatGPT most likely a bottlenose dolphin as common dolphins usually show up in groups and not moving as slowly as you describe
p.2 #5 · Nikon Z Nikon Z 24-200mm F4-F6.3 VR Images Thread
Stunning pictures!
I've seen a variety of dolphins and porpoises over the years and have never seen any of them move so slowly as that day above....but the dorsal fin certainly looks like a dolphin's. It was almost stationary to the point that I expected it to be someone playing a prank on that guy. I was flabbergasted when I looked on the computer and did a heavy crop to see that it was actually a marine animal. I figured only sharks would move that slowly, but then it was too small to be a shark.
p.2 #6 · Nikon Z Nikon Z 24-200mm F4-F6.3 VR Images Thread
urbanwild wrote:
Stunning pictures!
I've seen a variety of dolphins and porpoises over the years and have never seen any of them move so slowly as that day above....but the dorsal fin certainly looks like a dolphin's. It was almost stationary to the point that I expected it to be someone playing a prank on that guy. I was flabbergasted when I looked on the computer and did a heavy crop to see that it was actually a marine animal. I figured only sharks would move that slowly, but then it was too small to be a shark.
If it were a shark, there would be a second fin of the tail as their tail fin is vertical, whereas a dolphin's tail fin is horizontal. Single fin = dolphin. two fins = shark. Adult male Bottle Nosed Dolphins often live alone.
p.2 #7 · Nikon Z Nikon Z 24-200mm F4-F6.3 VR Images Thread
Took a look thru LR and filtered by lens today. Gained a new appreciation for the incredible flexibility and very adequate performance that this lens affords.
