I couldn't find a thread on this already, and it's a question staring to bug me a bit. Assuming a live archie did attack a ship or boat, owing to cavitation and the large radius of its suckers, would it realyl be able to attach itself to the hull of a boat? Studies show that at sea level, larger diameter suckers can run into problems regarding adherence, plus the problem with cavitation that affects nearly all cephs at sea level, where bubbls are formed in the sucker, causing it to fail, or even causing damage to the structure itself. Would an archie sucker be able to generate enough negative pressure? Or does it even need to since it's chitin rings are rather nasty looking pieces of work anyway? Any ideas? Is this just fiction, caused by a romantic respect for the sea, and the tall tales of bored, drunken sailors, or could it be true?