The ornamental design for a combinedshorelineprotectivestructure and water purification structure, as shown and described.
FIG. 1 is a perspective view of a combined shoreline protective structure
and water purification structure showing my new design. The broken line
showing is for illustrative purposes only;
FIG. 2 is a fragmentary elevation of a portion of the structure as seen
from the shoreline; and,
FIG. 3 is a fragmentary elevation of a portion of the structure as seen
from the ocean side looking toward the shore.