Hudson Bay is a big part of the sea.
It is in Canada. It is very cold there. Much of the water turns to ice.
Polar bears live near the ice. Do you like the snow?
Hudson Bay is a huge body of salt water.
It is in northeastern Canada. It sits near the Arctic Ocean.
The water is often very cold. Much of the bay turns to ice in winter.
This ice melts in the summer.
Many rivers flow into the bay. This fresh water makes the bay less salty. The salt level changes how the water freezes.
Polar bears live in this area.
They walk on the new ice. It is a very special place.
Many people visit the coast. It is a big part of the world.
Hudson Bay is a very large body of saltwater.
It is in northeastern Canada. The bay is part of the Arctic Ocean. It sits near Quebec, Ontario, and Manitoba.
Many rivers flow into the bay. This adds fresh water to the sea. Because of this, the water is not as salty as the ocean. This lower salt level helps the water freeze faster.
Much of the bay stays frozen from December to June.
The weather is very cold. Some parts have a polar climate. This means it is one of the few cold places south of the Arctic Circle.
Many animals live here. A large group of beluga whales lives in the western bay. Polar bears also live near the shores. Some bears use the land in Wapusk National Park to have their cubs.
In the past, explorers like Henry Hudson visited this place. He sailed his ship, the Discovery, in 1610. The bay is named after him. It is the second largest bay in the world.
Hudson Bay is a massive body of saltwater in northeastern Canada.
It is part of the Arctic Ocean. The bay sits near the provinces of Ontario and Quebec. It is also near Manitoba and Nunavut. Most of the bay is politically part of Nunavut. The southern arm of the bay is called James Bay.
This bay is the second largest in the world. Only the Bay of Bengal is larger. It is a very large area of water.
The water in the bay is not as salty as the ocean. This happens because many rivers flow into it. These rivers bring in a huge amount of fresh water. This fresh water comes from a giant drainage basin. This basin covers parts of Canada and the United States. It includes places like Alberta, Saskatchewan, and Minnesota.
Because the water has less salt, it freezes more easily. The bay is usually covered in ice from December to June. This ice can change how much life lives in the water. For example, the salt levels can affect tiny algae.
Explorers first saw the bay many years ago. People were looking for a way to reach Asia. Sir Henry Hudson explored the area in 1610. He sailed on a ship named Discovery.
Sadly, his crew mutinied against him in 1611. They left him in a small boat, and his fate is unknown. Later, the Hudson's Bay Company was started in 1670. This company traded beaver pelts for many years. They built forts along the coast to help with trade.
The weather in the bay is very cold. Much of the area has a polar climate. This is a very rare type of climate. In the north, the land is called tundra. The western shores are lowlands made of peatland.
These areas have permafrost, which is soil that stays frozen. The eastern shores are different and more rocky. They are part of the Canadian Shield. The temperature can be very low in the winter. In some places, it averages around -30 degrees Celsius.
Many interesting animals live in this cold region. Polar bears use the shores to find food. Some bears use Wapusk National Park to have their cubs.
There are also many beluga whales in the western bay. Scientists think there are about 54,473 of them. In the summer, the ice begins to melt away. You can see large chunks of ice floating in May.
The port of Churchill is a famous place here. It was used to ship wheat to other countries. Even today, ships stop there to help Arctic communities.
Hudson Bay is a massive body of saltwater located in northeastern Canada.
It is considered an inland marginal sea of the Arctic Ocean. While it sits near Ontario, Quebec, Manitoba, and Nunavut, it is politically part of Nunavut. The bay is quite large, covering about 1.23 million square kilometers. This makes it the second-largest body of water in the world to use the name "bay." Only the Bay of Bengal is larger in size.
The bay is relatively shallow compared to the open ocean. It is classified as an epicontinental sea, which is a sea on top of a continent. Its average depth is only about 66 meters. This is much shallower than the Bay of Bengal, which reaches much deeper. The bay has several connections to other waters. The Hudson Strait connects it to the Labrador Sea and the Atlantic Ocean. To the north, the Foxe Channel and the Fury and Hecla Strait connect it to the Arctic Ocean.
The water in Hudson Bay has a lower salinity than regular ocean water. Salinity refers to the amount of salt dissolved in the water. This happens because of a low rate of evaporation and high levels of terrestrial runoff. Terrestrial runoff is the fresh water that flows from the land into the sea. The Hudson Bay drainage basin is a massive area covering about 4.1 million square kilometers. It includes parts of several Canadian provinces and four U.S. states. These states are North Dakota, South Dakota, Minnesota, and Montana.
This lower salt level changes how the bay behaves. Because the water is less salty, its freezing point is higher than the rest of the ocean. This means the water freezes more easily. The bay is largely frozen from mid-December to mid-June. The presence of fresh water also affects marine life. For example, lower salinity limits the growth of micro algae. This change in algae affects the total biomass, or the amount of living matter, in the water.
European history in the bay began with a search for a western route to Asia. This route was often called the Northwest Passage. In 1610, an Englishman named Sir Henry Hudson explored the area. He sailed on a ship called the Discovery.
His crew eventually mutinied against him in 1611. They left him in a small boat, and his fate remains unknown. Later, in 1668, the ship Nonsuch arrived to trade for beaver pelts. This led to the creation of the Hudson's Bay Company in 1670.
The Hudson's Bay Company held a trading monopoly over a region called Rupert's Land. This area was part of the Hudson Bay watershed. France contested this control, but they eventually gave up their claims. This was settled in the Treaty of Utrecht in 1713. The company built several factories, which were forts or trading posts, along the coast. These posts, like York Factory, were used to trade furs with Indigenous peoples. In 1870, the company's monopoly ended through a British order called the Deed of Surrender. This transferred Rupert's Land to Canada.
The climate in the region is very cold and varies by location. Northern Hudson Bay has a polar climate. This is a very rare climate type found south of 60 degrees north. The northern shores are characterized by tundra. The western shores consist of the Hudson Bay Lowlands. This area is Canada's largest continuous peatland. It contains permafrost, which is ground that stays frozen.
In contrast, the eastern shores are part of the Canadian Shield. This area is much more rocky and hilly.
Many unique animals depend on this environment. The western bay is home to a large population of beluga whales. Scientists estimate there are about 54,473 individuals in this group. The region is also famous for polar bears. Some bears use Wapusk National Park as a major area for denning.
However, the environment is changing. Regional temperatures have been increasing over the last 100 years. This has caused the sea ice to decrease by about 19.5% per decade. The ice-free period is also getting longer.
Where will your curiosity go next?
🖼️ Images & Media (8)
More to explore
✨ What else?
Related topics you might enjoy
🔬 Go deeper
More advanced topics to explore
What is Nepedia?
A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.