Baffin Bay pack ice. Winds are predominantly north-western through the whole year. South-eastern and eastern winds are common in July and August. Between May and July (sometimes April), a significant portion of navigable open water (polynya) forms at the extreme north of the bay, presumably due to the relatively warm Greenland Current. With an area of about in summer, it is the largest polynya of the Canadian Arctic and covers the Smith Sound between the Ellesmere Island and Greenland. This polynya has a stable position and existed for at least 9,000 years. It was first described in 1616 by William Baffin and
Icy Strait Icy Strait The Icy Strait is a strait in the Alexander Archipelago in southeastern Alaska, at about . The strait separates Chichagof Island to the south and the Alaska mainland to the north. The strait is from its west side at the intersection of the Cross Sound and Glacier Bay to its east side at Chatham Strait and the Lynn Canal. The two largest islands in the strait are Pleasant Island and Lemesurier Island. The Cape Spencer Light is an important former lighthouse and currently active aid-to-navigation. The cruise ship "Empress of the North" ran aground near Rocky Island and