Batillipes mirus Richter, a marine tardigrade, was found to occur in the littoral zone of wave-pounded sandy beaches in the area of Alligator Harbor, Franklin County, Florida. In the summer of 1960 individuals were found only in localities with medium to strong wave action although
in the preceding fall and winter this tardigrade was collected in a neutral estuary with little wave action. Abundance data were taken from four tidal levels at one station with individuals being counted to a depth of 8 cm. at each level. The greatest number of individuals occurred in the
top centimeter (225/cc) around the mid-tidal line.
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