Of which ocean is the White Sea a gulf?
Gulf of Ob Gulf of Ob The Gulf of Ob (also known as "Ob Bay") (, "Obskaya guba") is a bay of the Arctic Ocean, located in Northern Russia at the mouth of the Ob River. It is the world's longest estuary. The mouth of the Gulf of Ob is in the Kara Sea between the Gydan and Yamal peninsulas. It is about long and varies in width from about , and generally runs north and south. The gulf is relatively shallow, with an average depth from , which restricts heavy sea transport. The Taz Estuary is an eastern side-branch formed by the
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",