rock barnacle การใช้

The rock barnacle, or picoroco, lives in a shell that looks like a miniature volcano.
Without the Web, few would know that scientists can be whimsical, as when they named nearby Martian rocks Barnacle Bill and Yogi.
There are many species of barnacles, but only two are commonly eaten : the gooseneck barnacle, a tubelike creature with very little shell, and the rock barnacle, almost all shell.
To figure out what kind of rock Barnacle Bill is, the camera on the Pathfinder craft was to take high-resolution pictures Tuesday using 12 different filters designed to let geologists identify mineral types by their characteristic colors.
By the time that final results of the mission were described in a series of articles in the Journal Science ( December 5, 1997 ), it was believed that the rock Yogi contained a coating of dust, but was similar to the rock Barnacle Bill.