2 ms·

what's cool to see is that vehicles created by humans the most efficient of all

• Tepix 1y ago
  You can sail around the world without spending any fuel.
  • ninalanyon 1y ago
    You will expend energy managing the sails. Quite a lot of energy if the ship in question is a tall ship.
  • IAmBroom 1y ago
    To be fair, so can a jellyfish.