The Origins Pt. 1 / The Origins Pt. 2

S4 E110: The Origins Pt. 1 : When Mom and Dad struggle to keep hyperactive, toddler-aged Gumball from trashing the house and exhausting them, they decide to buy him a pet. It works, but there's a problem: every goldfish they get him is short-lived, and inevitably ends up being flushed down the toilet. / The Origins Pt. 2: Via the sewers, Darwin finds himself flushed out to sea. He is terrified, but determined to make his way back to the Wattersons. However, a fish can't get very far on land, so Darwin will have to do millions of years of evolution in a matter of hours if he's going to get home safe and sound.