Hello! The first one is a real photo,but it's of a spinner shark, which is not dangerous. Has bitten people, but not a man-eater, and generally knows the diff between people and fish. It's a requiem shark, so similar to the Lemon, another not so scary one, tho still dangerous. I actually had to look up spinner, as I wasn't sure where it belonged.
The second one is not a shark, it's a bottlenose dolphin. It's a real photo, not manipulated, tho, so it's pretty spectacular. But it's not a shark. Whew!