Welcome to TONMO, a community of cephalopod experts, hobbyists and enthusiasts. Established in 2000, we are the founders of TONMOCON, and birthplace of World Octopus Day and Cephalopod Awareness Days. To contribute to the discussion, register here, and perhaps Introduce Yourself. To rid yourself of ads and enjoy other perks, become a Supporter for just $50/year. Follow us on Twitter and YouTube for more cephy goodness.
An average adult briareus, according to Cephalopods: A World Guide, will have a body about 5 inches (12 cm) long and arms about 24 inches (60 cm) long. How that stacks up to dollar bills, I don't know. Also, live octos are very difficult to measure.
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