The Great Blue Hole, Belize This massive ocean hole that is 984 feet wide and 410 feet deep is not only the world's deepest underwater sinkhole, but it is also one of the most dangerous.
Drake Passage, Southern tip of South America
This is one of the world's most renowned stormy seas, also known as the “Sea of Hoces”.
Named after British Explorer Francis Drake, this stretch of water remains probably the roughest in the world. Known simply as the Drake Passage, it sees the South American continent meet the Antarctic continent somewhere where two oceans collide – The South Pacific Ocean and The Southern Ocean.
As water flows from land to coastal waters, it is often contaminated by untreated sewage from boats, pets, failing septic systems, fertilizers, and spills from hazardous substances. High levels of bacteria and other chemicals in the water can cause gastrointestinal illnesses in those who swim directly in the water.
Because the North Sea is shallow, with an average depth of less than 328 feet, its waters can get choppy -- a result of tidal patterns and storms.
The Tasman Sea is one of the roughest waterbodies on Earth
Wind and wave conditions on the Tasman Sea are rough for most parts of the year. Regular atmospheric depressions pass over the Sea from West to East below the 40°S latitude.
When we think of Australian beaches, sharks often come to mind. On average one fatal attack is reported each year, but in the same period we averaged 122 coastal drowning deaths, with 25 per cent due to dangerous rip currents. Knowing where and when to swim is the best defence against these beach hazards.
Last year an expedition to the Mariana Trench made history by conducting the deepest crewed dive ever completed as it descended 10,927 metres into the Challenger Deep.
Of the five ocean basins, the Atlantic Ocean is the saltiest. On average, there is a distinct decrease in salinity near the equator and at both poles, although for different reasons. Near the equator, the tropics receive the most rain on a consistent basis.
The NOAA recommends only swimming at beaches that are guarded by a lifeguard, and, barring that, reminds swimmers to never, ever swim without anyone else present. Before you dip your toes in the water, be sure to find the nearest lifeguard stands, and be ready to alert them and call for help at any signs of trouble.
As a result of the merging currents of the Pacific Ocean and the Southern Ocean, the Tasman Sea can be extremely rough. Sailing conditions vary according to the season with November to March regarded as the best time to cross the Tasman Sea in order to avoid the worst winter weather.
The Mariana Trench, in the Pacific Ocean, is the deepest location on Earth. According to the Exclusive Economic Zone (EEZ), the United States has jurisdiction over the trench and its resources.
Are cruise ships safe in rough seas? Cruise ships are safe in rough seas and they routinely travel through waves up to 15 feet with no issues. Cruise ships have stabilizers to minimize the amount of rocking felt onboard the ship. The captain will order passengers to stay indoors if they deem it to be necessary.
The Southern Ocean is not only far-off, but also unambiguously the stormiest region of the planet. Of the sectors of the Southern Ocean, the South Pacific is the most remote — there aren't even islands. It is just this vast stretch of ocean, about 10,000 kilometers between Chile and Australia.
There's a reason deep-sea exploration by humans has been so limited: Traveling to the ocean's depths means entering a realm with enormous levels of pressure the farther you descend — a high-risk endeavor. The environment is dark with almost no visibility. The cold temperatures are extreme.
The Irminger Sea is situated south of the Denmark Strait which separates Iceland from the east coast of Greenland by 250 miles of rough water. It is thought to be the windiest stretch of salt water on the globe and one of the stormiest places in the world.
The South Pacific and South Atlantic Oceans are the least polluted.
It is not possible to swim in the Dead Sea. But if you try, the water will push you upwards, not letting you sink. As the salinity of the Dead Sea is more than 34% and it is way denser than freshwater, you will float effortlessly. Do not let your head go underwater as this highly salty water is dangerous to your eyes.
Although whoever enters the water immediately floats, you should keep in mind that it is still possible to drown in the Dead Sea. This happens when swimmers get caught in strong winds, flip over and swallowing the salty water. Always make sure to only enter proclaimed beaches, in the presence of a lifeguard.
Only three people have ever made it to the Challenger Deep. The first two did it 59 years ago this week: Navy Lt. Don Walsh, a submariner, and explorer Jacques Piccard. Walsh's engineering background allowed him to be a test pilot for the Trieste, a deep-diving research submersible purchased on behalf of the Navy.
Sunlight does not penetrate the eternal darkness below 1,000 meters (3,280 feet), an area known as the aphotic zone, which includes the midnight zone (or bathypelagic zone) between 1,000 and 4,000 meters (3,280 and 13,123 feet), the abyss (or abyssopelagic zone) between 4,000 and 6,000 meters (13,123 and 19,685 feet), ...
The deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest of the U.S. territorial island of Guam. Challenger Deep is approximately 10,935 meters (35,876 feet) deep.
Most of Australia and Oceania is under the Pacific, a vast body of water that is larger than all the Earth's continental landmasses and islands combined. The name “Oceania” justly establishes the Pacific Ocean as the defining characteristic of the continent. Oceania is dominated by the nation of Australia.
During the Cretaceous period (144 to 65 million years ago) a great inland sea stretched over one quarter of the country, inhabited by large underwater creatures and brimming with sea life. The water dried up long before humans came to Australia but many clues of the ancient sea bed have been left behind.
Landlocked countries are only located on the African, Asian, European and South American continents. There are no landlocked countries in Australia/Oceania, North America and Antarctica.