Trilobites: This Snail Goes Through Metamorphosis. Then It Never Has to Eat Again. The transformation of a deep sea mollusk is comparable to an average person growing as much as 60 feet tall with a giant sac of bacteria filling its guts. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Back from the DEAD: Scientists looking to clone the DODOMoon landing SHOCK: NASA tapes lost in 1970s expose biggest SECRET of the centuryNASA life on mars: Space agency on ‘right track’ to discover extraterrestrial lifeformsLife on Mars: NASA finds 'HOLY GRAIL' in rover search for ALIEN LIFEAstronomy calendar 2018: What to look out for in the June night skies?WATCH: NASA video allows you to see how Earth has changed in the last 20 years