There's a whole lotta fish in the sea and "Entourage" star Adrian Grenier wants to make sure it stays that way.

The 33-year-old appears in a Nautica and Oceana sponsored docutorial in the June issue of GQ which raises awareness about the overfishing of bluefin tuna. Because of advanced fishing technology, the bluefin population has declined by an estimated 80%.
(See photos of Adrian's new, short haircut.)

Vincent Chase really is a big fish in a small pond.

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