Mark occasionally makes sexual jokes and references, but it's never anything to severe. There are no instance of sexual content in the game.

Throughout the series, Mark kills fish to survive, which often results in small clouds of blood filling the water. Mark is also occasionally attacked by large creatures (see Frightening & Intense Scenes).

Mark consistently uses strong profanity throughout the series, including (and most frequently) f**k, sh*t, b*tch and more.

None.

Many episodes feature intense scenes or sequences. Early in the series, Mark is constantly on edge and is scared by almost every instance of a fast-moving fish or whenever he comes across something he hasn't seen before. Certain episodes feature Mark exploring the depths of the ocean, which are by far the most intense parts of the series.