I spent a lot of time in, on, and around the ocean when I worked down there for about seven years. A totally alien environment to a inlander like me. A couple camps I worked at were literally floating bunkhouses. You slept right on the ocean.
I've surfed with sea lions, been charged in a small boat by sea lions, seen a octopus, experienced riptide, sliced my foot on barnacles, road through crazy stormy seas in all manner of water transport, and been scared out of my whits countless times and still lived on to tell the tale!
Ocean, a giant salty lake that seems ready to rise up and pluck your life in an instant if it so feels like it.