I found several of these inch-long translucent worms on the beach at low tide. I'm sure they made tasty little morsels for the shore birds and other beach animals.
Sanibel Island, FL Dec. 17, 2009 All that is visible of the worm in this photo is the pale yellow tube which is extruding the sandy fecal cast. The animal is not a true worm, but a hemichordate.
Sanibel Island, FL Dec. 15, 2009 This tube was the former home of a worm that had buried in the sand. This is a common sight on many beaches.