That video reminded me of the scientific supposition (evolutionarily speaking) that sea mammals such as dolphins and whales used to live on land millions of years ago..they returned to the sea, and their appendages (legs) shortened into vestigial stumps near the tail as they no longer had any use for them!
This little fella is more streamlined without his shoulders and arms getting in the way...he won the race!!
Amazing Swimmer!
Natural selection
