'At 30 centimeters (11.8 inches) long, the subject of SuBastian's footage is definitely a juvenile. Colossal squid are "estimated to grow up to 7 meters (23 feet) in length and can weigh as much as 500 kilograms (1,100 pounds), making them the heaviest invertebrate on the planet," says SOI.'Ah, well. A footlong appetizer, so to speak ...