From the poisonous to the just outright vicious, here's a look at ten of the most deadly creatures you may encounter in the ocean.
- Pufferfish.
- Blue-ringed octopus.
- Stonefish.
- Great white shark.
- Lionfish.
- Box jellyfish.
- Tiger sharks.
- Sea snakes.
The South China Sea and East Indies, eastern Mediterranean, Black Sea, North Sea, and British Isles are the most dangerous seas in the world, with the greatest number of shipping accidents in the last 15 years, according to a report released by the World Wildlife Fund (WWF).
In general, tropical seas (especially the western Pacific Ocean) are more dangerous than temperate seas for the risk of injury and envenomation, which are common among seaside vacationers, snorkelers, swimmers, and scuba divers. Jellyfish stings are most common in warm oceans during the warmer months.
Because it is much larger, the Pacific has greater fetch. Waves are a function of wind speed and fetch. Hence, Pacific waves tend to be larger. The Southern Ocean tends to have very large waves because the “racetrack” around Antarctica (the Roaring 40s) provides a very long fetch.
Sea of Japan, Japanese Nihon-kai, Russian Yaponskoye More, also called East Sea, Korean Tonghae or Donghae, marginal sea of the western Pacific Ocean. It is bounded by Japan and Sakhalin Island to the east and by Russia and Korea on the Asian mainland to the west. Its area is 377,600 square miles (978,000 square km).
The Pacific Ocean is the largest and deepest of the world ocean basins. Covering approximately 63 million square miles and containing more than half of the free water on Earth, the Pacific is by far the largest of the world's ocean basins.
The Pacific is also our planet's deepest water body, with an average depth of approximately 4,000 meters (13,000 feet). The deepest place on Earth, known as Challenger Deep, extends to a depth of more than 11,000 meters (36,000 feet) and is found in the Mariana Trench, in the Pacific.
The Weddell Sea has been claimed by scientists to have the clearest waters of any ocean in the world. Described by a historian as “the most wretched and dismal region on earth”, due to the flash freezes that caught Shackleton's ship, its clarity is only belied by the sheer depth of the ocean below.
Sailing through the Indian Ocean has come to be a challenging task owing to its characteristic of being one of the most deadly ocean waters in the world. This ocean water is usually affected by coastal winds, temperature of the water surface and the water currents.
The Indian ocean is named after India because: India holds a central location which is at the head of the Indian Ocean. India in ancient times was an important location in the Indian Ocean which connected Europe with countries of Southeast Asia.
The Indian Ocean and the Pacific Ocean meet in the Gulf of Alaska, but we can say that these two oceans do not even meet together. This is because its water is never mixed into each other. The water of the Indian Ocean remains separate and that of the Pacific Ocean remains separate.
China, Russia and Iran held an unprecedented four-day joint naval exercise in the Indian Ocean and the Gulf of Oman.
Geographers divide the ocean into five major basins: the Pacific, Atlantic, Indian, Arctic, and Southern. Smaller ocean regions such as the Mediterranean Sea, Gulf of Mexico, and the Bay of Bengal are called seas, gulfs, and bays.
During summer, the central-east Indian Ocean is characterized by a warm pool with sea surface temperatures (SST) greater than 28.0°C, making it highly conducive for enhanced convection. This warming turns out to be the major contributor to the global ocean surface warming.
The Indian Ocean is the world's third largest ocean and covers 20% of the Earth's surface, after the Pacific and the Atlantic Oceans. In size the Indian Ocean is comparable with roughly 5.5 times the size of the USA.
Indian Ocean animals
- Blue Whale – Balaenoptera musculus.
- Dolphin – Delphinidae.
- Great White Shark – Carcharodon carcharias.
- Green Sea Turtle – Chelonia mydas.
- Hawksbill Sea Turtle – Eretmochelys imbricata.
- Humpback Whale – Megaptera novaeangliae.
- Leatherback Sea Turtle – Dermochelys coriacea.
- Orca/Killer Whale – Orcinus orca.
The Seven Seas include the Arctic, North Atlantic, South Atlantic, North Pacific, South Pacific, Indian, and Southern Oceans. The exact origin of the phrase 'Seven Seas' is uncertain, although there are references in ancient literature that date back thousands of years.
The Indian and the Pacific Oceans meet at South East Cape, the southernmost point of the main island of Tasmania, in Australia.
Explorer Ferdinand Magellan named the Pacific Ocean in the 16th Century. He called this body of water pacific, due to the calmness of the water at the time ('pacific' means peaceful). When Magellan and his crew entered the Pacific Ocean after their long journey, they thought that the Spice Islands were close at hand.
All of us own the oceans, and yet none of us do. It's a conundrum. For centuries, beginning with the Age of Exploration when ships were developed that could convey humans across the globe, the governments that represent people like you, the oceans' owner, agreed that no one owned the oceans.
Many of the islands are volcanic, and the Pacific is much more volcanically active than the Atlantic. The reason for that, in turn, is that the central Atlantic is a divergent boundary between tectonic plates (the plates are moving apart, which produces spread-out, 'ooze-y' undersea lava vents).
Details about the diagram include: The two tectonic plates that lie under the Atlantic Ocean are the Eurasion and African Plates. Also the two tectonic plates that lie under the Indian Ocean are the African and Indo-Australian Plate. Finally the tectonic plate that lies under the Pacific Ocean is the Pacific Plate.
Geological history. The Pacific Ocean was born 750 million years ago at the breakup of Rodinia, although it is generally called the Panthalassa until the breakup of Pangea, about 200 million years ago. The oldest Pacific Ocean floor is only around 180 Ma old, with older crust subducted by now.
The Pacific Ocean evolved in the Mesozoic from the Panthalassic Ocean, which had formed when Rodinia rifted apart around 750 Ma. The first ocean floor which is part of the current Pacific Plate began 160 Ma to the west of the central Pacific and subsequently developed into the largest oceanic plate on Earth.
The islands of the Pacific have originated as: linear chains of volcanic islands on the above plates either by mantle plume or propagating fracture origin, atolls, uplifted coralline reefs, fragments of continental crust, obducted portions of adjoining lithospheric plates and islands resulting from subduction along
According to some scientists, the Atlantic Ocean is rapidly "aging" and may soon disappear from the face of the Earth. A team of researchers from Australia found a quickly forming subduction zone on the ocean floor.
The Atlantic ocean and the Arctic ocean are good examples of active, growing oceanic basins, whereas the Mediterranean Sea is shrinking. The Pacific Ocean is also an active, shrinking oceanic basin, even though it has both spreading ridge and oceanic trenches.
Seafloor spreading is when tectonic plates split from each other, creating a new oceanic crust. While the Pacific Ocean is slowly shrinking, the Atlantic Ocean is expanding.
These days, the Atlantic Ocean is growing at a rate of five centimetres per year, as new sea floor is created by volcanic activity along its mid-ocean ridge. On the other hand, the much older Pacific Ocean is currently estimated to be shrinking by two to three centimetres each year.
