Seaman is possibly one of the best simulation games ever to hit the gaming market even though it is incredibly weird and very underrated. I First off it uses the dreamcast microphone (I think this is the only game to use the sega microphone) very well. you actully talk to the pets you are rasing. Secondly it is narrated by Leonard Fricking Nimoy! It's very interesting to see them grow up and talk to them they even have stages let me break them down:

1 Mushroomer these are just like eggs.

2.Gillman they now have faces but vey little vocabulary.

3 Podfish these are almost exactly like Gillman but more more matured.

4 Tadman now the "fish" have turned into frogs

5 Finally the Frogman now they are fully grown frogs ready to take on the world!

Sigh,they grow up so fast!

They even realesed a seaman 2 in japan but since it wasn't well recived they didn't ship it to anywhere else.