Oceans, desert

[BioLogi]

thanks

[Cat]

I would guess because both are extreme environments for us.

Desert has too little water – Ocean has too much water and too much salt
Desert is too hot – ocean is too cold
Too much light in the desert – too little light in the ocean
Both have limited plant life – in the desert because of the lack of water, in the ocean due to lack of light (except close to surface).