How big are whales ?

The largest mammal on earth: The blue whale (30 m)

Out of the 80 different species of cetaceans (whales, dolphins, and porpoises) in the world, blue whales are the largest. Blue whales can grow as long as 30 m and weigh around 180 tons.
What do you think a blue whale would look like if you saw one in your city, across the plains, or in the sea!? Let’s see how big they are!