Jun 6, 2011

Silent as a clam

Clams are all mouth but have nothing to say.

In this case they appear long dead (presumably by way of the drought or a wading bird's beak,) although in walking on them, as you'll hear in the video, they made quite a crunch.

Biologists at Everglades National Park identified them as the non-native Corbicula clam, most commonly found at inflow points, which in this case would be from the upstream Tamiami Trail. These tiny clams are usually found in areas of high flow, a condition which bivalves prefer since as filter feeders that don't move they rely on the fast-flowing water to bring the food to them.

Just upstream you can hear the occasional roar of the Trail by way of a Tractor Trailer rolling by.

The clams of course are silent.


swampbuggy said...

Does this non-native pose any environmental danger like so many others that have made it to this area?

Robert V. Sobczak said...

Good question: I've noticed them in other places but never this thick. I wonder if anything eats them and if they crowded out a native freshwater clam? I'll give a call to the same biologists who identified them to find out.

Ciss B said...

Silent except for their conversation with you as you walked on them! :-)

jabblog said...

So the trail has clammed up . . . (sorry, that sounded better in my head)

Janie said...

Interesting that these non-natives do so well in certain areas.
Silent as a clam makes perfect sense as a metaphor. But I've also heard "happy as a clam". I can't figure that one out.