Marriage of the Sea ceremony of the sea continues to this day. It is performed by the mayor of Venice aboard a smaller ceremonial barge called the "Bissona Serenissima". Marriage of the Sea ceremony The Marriage of the Sea (), sometimes referred to as the Marriage of the Adriatic, was an ancient ceremony which used to symbolize the maritime dominion of Venice. The ceremony, established in about 1000 AD to commemorate the Doge Pietro II Orseolo's conquest of Dalmatia, was originally one of supplication and placation, Ascension Day being chosen as that on which the doge set out on his expedition. The form it took
Sea urchins of the Gulf of California Sea urchins of the Gulf of California The sea urchins of the Gulf of California live between the coasts of the Baja California Peninsula to the west and mainland state of Sonora, Mexico to the east. The northern boundary is the lateral band of land with the remains of the Colorado River Delta, and the southern is the Pacific Ocean. The Gulf of California is known for its high diversity and endemism of biota. One type of marine animal that can be found in this region is the sea urchin (class echinoidea, in the phylum echinodermata). One echinoid, "Mellita granti",