User blog comment:Corran18/MH Art competiton/@comment-1431853-20110513220935/@comment-969093-20110513230004

30 feet is 10 meters. :/ 1 foot = approx 30cm.

You say it's a large leviathan so we'd be looking for a lenght comparable to lagia/agna. Which is around 2600-3400cm.