Seaman is pretty fun, but you can really only play it for about 20 minutes a day. You turn it on, talk to your seamen, make sure the temperature in the tank is good, and then you have the option of shutting the dc down or watching them swim. After saying about 4 things seaman will say he's tired and doesn't want to talk anymore. There are a few fun things you can do though, for example when your seamen are little ask them what comes out of a penis, and damned if they don't say semen.
You can also say shit, and they shit out of the tentacles on top of their head, right at the glass. It then slides down and smears up the side of the tank.