We aren't designed to travel in the ocean while other animals, like sharks, are.
Two things that made travel difficult for humans was a lack of natural speed and the lack of knowledge in correcting this. Once humans were able to ride animals and build vehicles, they become very efficient at travelling.
Because Ocean transport = acess to more food
water and mountain
In clubpenguin, penguins can't travel the ocean...........
why was travel across the Sahara desert difficult
The ocean is deep and dark, and much of the ocean floor is covered in sediment. Sediment is made up of small particles of rock and other materials that settle to the bottom of the ocean. This sediment can make the ocean floor difficult to see.
the ocean salinnity
It is difficult to say if the Indian ocean is the 3rd deepest. It is the 3 largest. It is difficult to say because some ocean lengths are unfathomable.
Humans can't see in the ocean because the salt water burns their eyes.
why was travel across the Sahara desert difficult
You would have to travel through the Atlantic Ocean and then through the Indian Ocean.
Atlantic Ocean