You are on a dive trip, looking for Prehistoric Anomalies (PA). You and your team have already faced a particularly ferocious Endoceras, but you doubt anything could be out there larger than that damned cephalopod.

Suddenly, a loud roar is heard. A lone orca swims rapidly before being grabbed by an enormous pliosaur.

Judging from the area you're diving in, this is a Sachicasaurus.

Your dive operator shouts over the loudspeaker that you need to get the hell out of the water.