A plucky, playful sea turtle, Squirt idolizes his father Crush and has inherited his dad's fearless and easy-going attitude. With his spunky personality and big, expressive eyes, Squirt bubbles with joy, loves to frolic in the ocean currents and surf with his father. Squirt's high-spirited personality allows him to make friends easily and enjoy each day as an interesting, new adventure.
Squirt is seen playing hide-and-seek with Dory and he then listens to Marlin's story of how he lost Nemo. He then gives Marlin and Dory instructions on how to exit the current they were riding. He attends school with Nemo at the end of the film as an exchange student. Squirt acts and talks just like his dad.
Alongside Crush, Squirt returned in the sequel Finding Dory, this time as a minor character. In this sequel, while Crush tells Marlin to hang onto him by maintaining his grip in order to arrive to Morro Bay, California safely, Squirt also tells Marlin to hang on tight so that he should hang onto Crush so that he could safely arrive to Morro Bay, California. Dory and Nemo suddenly talk to Squirt and the other young sea turtles when Dory thinks of her parents Jenny and Charlie who would be in Morro Bay, California. Squirt and one of the other turtles ask Dory to know what her parents look like in order to find them, in which Dory (still with her short-term memory loss) thinks that her parents are blue and yellow fish in which Nemo thinks that Dory's parents are actually blue and yellow fish as Dory thinks that she would see her parents if she, Nemo, and Marlin arrive to Morro Bay. As Dory, Nemo, and Marlin arrive to their destination in a sunken wreckage, Squirt and Crush wish the three good luck in helping Dory find her missing parents. He and Crush are never seen again throughout the rest of the film after they transport Marlin, Nemo, and Dory to their destination.