Mi-14 does float... thats why the side tanks on these have a different profile (same function as Seaking maingear pods)
These helos are quite rare, only other known operator outside CIS is the Polish Navy, and most of the pictures that you can find on the net are from their machines.
Visible differences compared do Mi-17 / Mi-8:
Fuselage bottom profile
Has two front wheel sets instead of one
Has retractable gear
Tailstrike protector has a flotation device
way better picture
here