The bay is roughly rectangular and opens to the southeast. The corners are (clockwise from the south) Cape Navarin (another source says the adjacent Cape Thaddeus), Anadyr Estuary, Kresta Bay and Cape Chukotsky on the Chukchi Peninsula. It is about 250 miles (400 km) across. A long gravel bar runs along the northeast shore for about 45 miles (72 km) east from Kresta Bay. The Gulf of Anadyr is covered with ice normally 10 months a year. Whales such as Bowhead and Gray may appear close to shores.