My name...well, you asked.
My first house had a 16 x 32 in-ground pool with a wooden deck. Needless to say, we had many gatherings, and beer-drinking adventures.
One time I ended up naked and drunk. I made some sort of half-assed dive off the board, swam up to the end where my beer was and leaped up out of the water and slid on my belly on the wet wood to grab my beer. I guzzled and clapped my hands and barked like a seal.
One of my wife's proudest moments I'm sure. Got a ton of laughs though.
The nickname Seal has stuck ever since.
ps..no slivers lol