Exclusive Economic Zone (EEZ)

[Kynth]

Is there a feature or existing import (official or community created) to easily see an approximation of one or more EEZ's?

[Zaslon]

You can make an approximation yourself. As far I know, nopes. EEZ extension is generally 200 nm from coast in open waters (350 nm when the the contintenal shelf is beneath the ocean). When the distance between coast of two countries, the most accepted criteria is the middle point. In other cases, sides should reach an agreement.

P.S. you can search on internet, surely in some .KML or .KMZ file you can find the info what do you want.