Both have a similar shape that is streamlined, and both use "wings" (planes in submarine terrms) to adjust their movement as they're propelled through their respective mediums (air and water).
whats a streamlined?
Yes it does it has a streamlined body
ELEPHANTS ARE NOT A STREAMLINED ANIMAL
Streamlined often means aerodynamic.
wATER BEING STREAMLINED.
penguin is streamlined to swim in cold waters
uTorrent is a streamlined torrent download program.
Their shape and aerodynamic efficiency makes them streamlined.
It was obvious he'd merely streamlined my report! Won't today's jets fly faster if they become more streamlined? This team will operate much more efficiently after I've streamlined it.
The cheetah is the most streamlined big cat.
They have a streamlined bonnet so that the air will be pushed over the car.