@janbb You mean that shell that opens when they are steamed and doubles as a serving patter in clams on the half shell?
@josie Not only does high tide render them relatively safe from humans, sea birds feast on them at low water as well. And the tide brings in the nutrients on which they feed. So the original saying makes perfect sense.
As to pigs, they have a very highly developed sense of smell. They are better at sniffing out underground truffles that bloodhounds are. But most truffle hunters now prefer dogs, because they could care less about eating a truffle when they find one, whereas the pig will vigorously compete with the human to see who gets to claim the prize. I am pretty sure pigs prefer clean surroundings. They do like to wallow in mud, because it cools them and protects them form insect attach. But I’d bet a dollar to a doughnut (which now costs more than a buck) that they would far prefer clean mud to shit-filled slime.
@Sunny2 When I lived on the shores of the Chesapeake, I tried to engage them in conversations. They ‘just sat there smiling’;http://1.bp.blogspot.com/_D0qmWuUaP3g/R7JsPa0zAtI/AAAAAAAAA2s/jGiyzVxdewI/s1600/happyClams-706198.jpg. I couldn’t get a word out of them.
@”:http://www.fluther.com/153432/why-are-clams-so-happy/#quip2612115 I am guessing these are not happy clams.
@blueiiznh Perhaps not happy, but hardly meaningless. There purpose is to live, to reproduce, to keep life going on.
@Coloma Great answer. I couldn’t have said it better.
@BhacSsylan Ha! Ah yes, and that reminds me why I so enjoy eating a clam to make it happy.
@JenniferP Great point. They just do their thing as nature set them up to do.
@wundayatta It isn’t self evident to me because it is my sad fate not to be a clam.
@cookieman Like I mentioned to @josie above, I really don’t believe pigs find shit all than pleasant. And @Coloma‘s spot on about who makes pearls. But oysters only do it when some irritating rock or particle gets into their shell and begins to hurt. They build up a pearl around it to finally end the irritation it brings.
@mazingerz88 Now there’s another saying I just don’t get.
@JenniferP Do they even like oysters? Why would they care if the world were their oyster. Inter-species competition for the same vital resources. And yeah, @josie provided a link to the full context in his first response.