The first tattoo looks like two sharks that are stuck in something. Unless the artist meant for it to look that way, it isn’t a very pretty tattoo. It’s also unfinished- you can see the outline of what the final product is supposed to be. We don’t know why, but it just seems incomplete.
The tattoo-making process was likely stopped abruptly, as evidenced by the unfinished look of the left side. In comparison, the right side appears to be completed and is much more realistic looking. The Great White shark, corals, and other sharks look like they could be swimming in real life.