I1S1O1B3A1T1H4S1
13 points
ISOBATHS is validvalid
ISOBATH, a line on a map connecting points of equal water depth [n]
ISOBATH, a contour line connecting points of equal water depth [n]
ISOBATH, a line on a map connecting points of equal water depth [n]
ISOBATH, a contour line connecting points of equal water depth [n]