Go For The Krill: Darker WatersExpansion

From BoardGameGeek:

In the darkest reaches of the sea lie the ocean's fiercest and most deadly creatures. As the commotion overhead signals it's time to feed, they come up from their slumber to join the fray. Likewise, beasts of the air dive deeper than ever so they, too, can fill their bellies with krill. Go For The Krill: Darker Waters expands the base game's options by adding more interactive creatures to players' hands, Mission Cards that raise the stakes by adding new avenues to gain points, and even a way to break ties when cards cancel. Additionally, components to support a seventh player are provided, making games of Go For The Krill even more exciting. -description from the publisher