Crepidula fornicata
In the chapter on Sex and Size in his book The Flamingo's Smile Stephen Gould discusses the remarkable sex life of the slipper limpet, Crepidula fornicata . This curious creature starts out life as a male. They form stacks, with the smaller limpets (male) at the top of the stack and the larger ones (female) at the base of the stack -- this creature is a protogynous sequential hermaphrodite, changing to female as it grows larger. In any case, because the small males at the top of the stack of limpets must have some reliable way of getting their sperms to the large females at the bottom of the stack, the species has evolved a penis that is far longer than the length of the rest of its entire body (it can extend past the several other males likely to be between one male limpet and the females below).
Well, that's ONE way.
I hate show offs........
#77 re limpets and sex. It’s call “The Trickle Down Theory”.
Also it is a “marine” snail so you know the Marine Corps slogan - “Can Do”! /sarc
Also, the limpets’ theme song is “Ain’t No Mountain High Enough” to keep me from getting to you.