There is a difference between 'large' and 'fat'. Whales are the largest creatures on earth by a scale of many time above humans - the same criteria for fatness cannot be used to compare the two. Additionally, any fat a whale has is necessary to protect it from the cold of the oceans.
They produce lots of blubber to protect themselves from the cold and the extreme pressure at lower depths. Jellyfish drift, whales swim. This is partially true but the main reason whales have a lot of blubber is a question of buoyancy. Fat is much less dense than muscle and bone and without it the whales would sink very fast.
Swimming Zones is far more impressive than swimming stars but stars is good training
As a matter of fact, swimming may be better than running because it has less impact on joints and more of the body is used for swimming than running.
Whales are a lot better swimmers than humans
Other than being very good for exercise and fitness, no.
baleen whales are much larger than toothed whales
Whales are mammals which means that they have lungs. Fish do not have lungs, they have gills. Whales also have a different way of swimming than fish. They move their tail fin up and down to move forward. While fish move their tail fin left to right to move forward. Whales also communicate with each other through whale songs. Fish cannot.
It was much longer than two whales.
You will generally not want to put a swimming pool in a lot that is less than 7x7 feet. Less space than this is only good for a large jacuzzi.
no
yes you can many Japanese people still hunt whales for "scientific research" but is sold in local markets of japanYes.
That would be determined by your doctor. Not a good idea to swim as you can get an infection.