Date: Mon Feb 8 00:04:45 EST 1999
Subject: A.Word.A.Day--limpet

limpet (LIM-pit) noun

1. Any of numerous marine gastropod mollusks, as of the families Acmaeidae and Patellidae, characteristically having a conical shell and adhering to rocks of tidal areas.

2. One that clings persistently.

3. A type of explosive designed to cling to the hull of a ship and detonate on contact or signal, or timer.

http://www.imdb.com/title/tt0058230/

the first movie I remember as a child, I would have been around two...

Certainly not limpid, here's an illustration of the limpet (not the explosive) from MW:

http://www.m-w.com/mw/art/limpet.htm

Ate limpets once. My dad had a book called "Edible Incredible" and we tried all sorts of food from the sea including limpets (hard to collect and turned the water they were cooked in BRIGHT green), sea cucumber (5 little strips of longitudinal muscle along the inside - helpful little guys clean themselves by throwing up their insides as a defence mechanism) and bull kelp pickles (5 changes of water to deslime them before pickling).
Unusual man, my dad but very cool.

That'll teach me to scroll all the way to the end, Zed or no Zee.

Yeah, AnnaS! You really were turned on by that squid fried in butter! Ha! And that warn't no beginnin' competition for limpets and sea cucumber!

Sorry Anna
and that was just what we were willing to try!
The scary part is that I take after my Dad.
One time he ate a . . . never mind.