It is because of friction. The resistance of a square or sphere would slow it down. It was also going to create noise due to the drag.
Yes, stars are shaped like spheres (same with planets and moons).
They are described as torpedo shaped.
A couple of reasons.A submarine isn't shaped like a cube because water flowing around a cube would make noise that could be heard on sonar. Submarine forces work very hard to make their submarines less audible.It also isn't shaped like a cube because depending on the way the cube is oriented in the water, it would take more power to push the submarine through the water.A combat submarine isn't shaped like a sphere because a sphere won't hold as much load as they would the shape they are made. They have made spherical-shaped submersibles for extremely deep-water exploration because a sphere is the most pressure-resistant shape.
It is torpedo shaped, look at the similarities.
ballsglobesglobe shaped lightbulbsmeatballssnowglobesornaments
I believe they're classed as 'Torpedo shaped'
all penguins have a streamlined torpedo shaped body to help reduce drag while swimming, this increases their speed
Not sure exactly what you're talking about, but a squid can certainly appear torpedo shaped when swimming and also possesses a triangular shaped fin on the posterior end (the end opposite the arms and tentacles).
THE BODY OF A SHARK IS SHAPED LIKE A TORPEDO FOR FAST MOVEMENTS
because the gas is distributed evenly in all directions
Subway was originally called Pete's Submarines after the so-called "submarine sandwich" served on a torpedo-shaped roll. When said on the radio it sounded like "pizza marines" so they changed the name to Pete's Subway. Later restaurants just called it Subway
True...