In the early 1980's Casio made a line of digital water-sports watches called the Mariner. Today people refer to them as Marlins. How/when did this switch take place exactly? I have several theories for how this unexplained phenomenon occurred...
1. Timex made an early waterproof watch (probably about 2M resistant) in the 50's or early 60's called the "Marlin." They reproduced several of their early models in a 2001 classic/retro line.
2. There is a dang Marlin (fish) on the face of the watch.
3. Marlin just sounds better.