One of the best things in this documentary is that in one just episode you travel to several places in earth and learn from different places, concepts and animals the same thing. For example, the smell thing, from the tiger sharks, the turtles, the salmons, the grass etc! It keeps you hooked and helps you to understand the concept (speed, smell, etc) even better and most importantly to not forget what youโve learned. Bravo ๐ We want more of these documentaries. Thank you!