By clicking the Evolution button on the game's start screen, you can choose which shark you want to play. The in-game store that emerges allows you to purchase a number of tools and gadgets and outfit your shark with them. There are some attachments that cannot be used simultaneously, and each shark box can only carry one thing. Cells for the fin, neck, nose, eyes, and head are all present. For instance, you can't use the blindfold and the monocle at the same time.