Oceans london

Mallinson Sadler Productions. Technical specs Edit. Runtime 47min. Contribute to this page Suggest an edit or add missing content. Edit page. Best New and Upcoming Netflix Releases. See the full list. Watch the video. Helping to connect regional stakeholders with international businesses to drive a sustainable use of the Indian Ocean and beyond.

Oi Connect is a digital platform designed to bring together key innovators and key buyers through an online event. Read the latest ocean tech industry news, trends and insights from across the globe with our news page.

Discover new products, updates from our partners, latest innovations, and more. The oyster or mussel slowly secretes layers of aragonite and conchiolin, materials that also make up its shell. This creates a material called nacre, also known as mother-of-pearl, which encases the irritant and protects the mollusc from it.

When pearls are cultured commercially an irritant is manually inserted into a mollusc to promote the production of mother-of-pearl.

Nacre can form naturally around almost any irritant that gets inside the shell, creating some very unique and precious pearls. Killer whales also called orcas are apex predators, meaning they are at the top of their food chain. They feed on fish and squid like other odontocetes toothed whales do, but will also target seals, sea birds and even whale species far bigger than themselves.

Killer whales are also the only known predators of great white sharks. Killer whales are the largest dolphin species. They are highly social and spend most of their lives swimming in large pods of family members. Hunting techniques are passed down through generations, so their diets depend on the region they inhabit and the pod's approach to hunting. These highly intelligent cetaceans have been documented creating large waves to wash seals off ice floes, and even intentionally beaching themselves to catch prey on the shore.

Read more about what whales eat. Blue whales eat krill - tiny, shrimp-like crustaceans that live throughout Earth's oceans. The huge whales can eat up to four tonnes of krill every day. Blue whales lunge through large swarms of krill with their mouths open, taking in more food in one mouthful than any other animal on Earth. Krill make up the vast majority of a blue whale's diet.

The blue whale is a filter-feeder. Its throat has an expandable, pleated structure to engulf a volume of water and prey that is greater than the animal's own body weight. The water it takes in at the same time as its food is pushed out of the mouth by its enormous tongue, through strainer-like baleen plates which hang down from the upper jaw.

Watch how a blue whales lunges for its food. Much of the plastic that does not end up in landfill or go through other waste management pathways such as recycling or incineration is thought to end up in the ocean. Between 4. Plastic can enter the ocean as large, identifiable items or as microplastics - pieces under five millimetres in length. Both pose a threat to marine life. Large pieces degrade over time to become microplastics, but never fully disappear.

Plastic has accumulated in huge quantities throughout the ocean - even in deep-sea areas previously thought to be untouched by humans. A study involving Museum researcher Dr Lucy Woodall found high levels of contamination in deep-sea sediments. It revealed that around four billion microscopic plastic fibres could be littering each square kilometre of deep-sea sediment around the world.

Find out how plastic is affecting marine life. Ocean acidification is mainly caused by carbon dioxide gas in the atmosphere dissolving into the ocean. This leads to a lowering of the water's pH, making the ocean more acidic. Many factors contribute to rising carbon dioxide levels.

Currently, the burning of fossil fuels such as coal, oil and gas for human industry is one of the major causes. Deforestation results in fewer trees to absorb the gas. Also, when plants are cut down and burnt or left to rot, the carbon that makes up their organic tissue is released as carbon dioxide.

Some parts of the ocean are naturally acidic, such as at hydrothermal vent sites - underwater 'hot springs'. In the past, ocean acidification occurred naturally but over much longer periods of time. It is occurring faster now than in the last 20 million years. Find out how ocean acidification is causing problems for marine life. The longest ever recorded dive by a whale was made by a Cuvier's beaked whale. It lasted minutes and broke the record for diving mammals.

Other whales can also hold their breath for a very long time. A sperm whale can spend around 90 minutes hunting underwater before it has to come back to the surface to breathe. In , a male sperm whale was killed off the coast of South Africa after surfacing from a dive lasting minutes. Whales' lungs are particularly efficient at taking up oxygen when they breathe air in and out through their blowholes at the water's surface. Special adaptations help them hold their breath for a long time.

Discover the secrets of the deepest-diving whales. Rather than keeping oxygen in their lungs like humans do, whales' bodies are specially adapted to store oxygen in their blood and muscles. They have extraordinarily high levels of the oxygen-storing proteins haemoglobin and myoglobin. Whales also reduce their heart rate and stop the blood flow to certain parts of the body, temporarily shutting down organs such as their kidneys and liver while they hunt.

This helps them use the oxygen they have in their bodies more slowly. Furthermore, beaked whales which can dive for a particularly long time have a streamlined body shape. Their flippers fit in indentations in the body, enabling them to take on a torpedo-like shape. This helps them to swim, and often to glide, with minimal effort and extend their oxygen stores for as long as possible. Read the secrets of the deepest-diving whales. Whales are accomplished divers.

The deepest whale dive recorded so far was made by a Cuvier's beaked whale. A study used satellite-linked tags to follow the dives of eight beaked whales off the southern California coast. The deepest recorded dive was 2, metres, breaking the record for diving mammals.

Experts have suggested that this dive was unusually deep for this species. A more normal depth would be 2, metres. Read more about deep-diving whales. Ocean acidification can negatively affect marine life, causing organisms' shells and skeletons made from calcium carbonate to dissolve.

The more acidic the ocean, the faster the shells dissolve. Animals that produce calcium carbonate structures have to spend extra energy either repairing their damaged shells or thickening them to survive. Using energy for this could impact the animals' abilities to grow and reproduce. Animals able to survive and reproduce in more acidic waters are likely to become smaller, potentially affecting the food chain that relies on them.

Discover more about ocean acidification and its impacts. These cookies do not store any personal information. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.

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