Before revision: Types Two adjacent bays at San Sebastián, Spain, one enclosed (left, with an island at the mouth) and one open (right) Open bay — a bay that is widest at the mouth, flanked by headlands.
After revision: United Nations Convention on the Law of the SeaTypes Two adjacent bays at San Sebastián, Spain, one enclosed (left, with an island at the mouth) and one open (right) Open bay — a bay that is widest at the mouth, flanked by headlands.