Okay, it seems like all of our smartphones are going to be waterproof one day. This means that soon you will be able to take them swimming, and not worry about the phone getting ruined. Until then, use the Yosh.
The Yosh is this simple bag that keeps your smartphone safe. Perhaps it is better than a Ziploc bag that Officer Hopps used in Zootopia when she had to flush herself down a toilet to escape. Yeah, that happened.
Fortunately, you don’t need that type of protection. However, in case you just want to take some pictures of fish, you can do that. Which leads me to believe that whoever took that picture here had two smartphones and two Yosh things.
If you want this, you can get it for $6.99 on Amazon in black, green, magenta, orange, white, and yellow.