50km
The maximum depth of the Bay of Biscay is approximately 4,700 meters (15,400 feet). This depth is found in the region known as the Biscay Abyssal Plain, which is located southwest of the French coast. The bay is known for its rough seas and significant maritime activity.
The Mariana Trench in the Pacific with a maximum known depth of 6.8 miles
Oregon has three national parks: Crater Lake National Park, which is known for its stunning deep blue lake formed in a volcanic caldera; Oregon Caves National Monument and Preserve, featuring unique marble caves; and the lesser-known John Day Fossil Beds National Monument, which showcases rich fossil deposits and colorful rock formations. Each park offers unique natural beauty and opportunities for recreation.
There are many caves in Australia. Some of the better known ones are the Jenolan Caves, Wellington Caves and Abercrombie Caves. There are many spectacular caves that are not-so-well known throughout Australia. The Nullarbor Plain is a spelunker's paradise.
13 major caves are known.
The maximum time a diver can spend at a specific depth without needing to make decompression stops, also known as the no decompression limit, varies depending on the depth and the dive tables or dive computer being used. It is important for divers to adhere to these limits to avoid decompression sickness.
The Mariana trench is the deepest known oceanic floor - at a maximum known depth of 36,070 feet (+/- 130 feet).
There are many spectacular caves, known and not-so-well known throughout Australia. The Nullarbor Plain is a spelunker's paradise. A list of the better known caves can be found at the related link below.
Prince Edward Island has no known caves.
the maximum depth that you can go in the water without a decompression stop is 130 feet. Below 210 feet it is dangerous to dive without mixed gases.AdditionThe maximum depth is not known since people are always trying to break the record. But you must be properly trained and have the necessary equipment. For normal recreational diving, the above answer is absolutely correct and the recommended limit is 130 feet for many good reasons.
The famous caves in Jordan are called the "Petra" caves, also known as the "Rose City". These caves are ancient and were carved into the rock by the Nabateans. They are a popular tourist attraction known for their unique architecture and historical significance.
it is also known as philippine trench, its depth is 10,540 m.