Dark and alone
Here’s an important lesson for anyone who wants to go diving: if you’re not certified to dive deeper than a certain depth, don’t do it. You never know what might be down there waiting for you. In this person’s case, the beautiful colors of the coral reef were too enticing not to examine more closely.
After going 50 feet deeper than they were supposed to, this guy had lost track of where his diving buddy went. They spent a minute in complete underwater isolation before the buddy showed themselves. Hopefully, that’ll be the last time this guy tries to venture into waters they’re not certified to visit.