But even then, its nemesis here — the pyjama shark — is able to root out the cephalopod and attempt to make a killing bite. Episode: 1x04 Airdate: Nov 19, 2017 Survival in the remote open oceans is tough and baby turtles use debris as rafts to stay afloat while the Portuguese man-of-war sail along hunting for fish. Teachable Moments: This is the only episode of the Blue Planet series that focuses on land-based life. Eventually a bear makes a catch. First a tiger shark stalks a green turtle, which grazes on the seabed much like a tortoise does on the land. In fact, the bottlenose dolphin possesses the second-largest brain-to-body-weight ratio of any animal, behind only humans. As the ice melts, thousands of belugas congregate in large estuaries for a communal exfoliation! Teachable Moments: Of all the oceanic ecosystems, the coral reefs boast the greatest biological diversity and complexity.
For your chance to visit this imperilled yet beautiful land, our range of allow you to spot wildlife among its fjords, glaciers and mountains while in the company of expert guides, photographers and climate researchers. Millions of squid that normally spend their lives at depth come to the shallows in enormous shoals to breed and lay their eggs over a number of days. Dr Lucy Quinn of the British Antarctic Survey presented a stomach-turning selection of rubbish that had been regurgitated by albatrosses living on the remote island of in the South Atlantic. But even here, almost seven miles from the surface, there are natural wonders aplenty. Weaker tides control the movements of huge numbers of fish, coaxing stingrays though astounding underwater arches.
The reefs of the Red Sea provide an even more pleasant locale for groups of young bottlenose dolphins, who play amongst each other with discarded corals and sponges. Here in the temperate seas, three-ton basking sharks graze among forests of giant kelp - the fastest growing plant in the world. Mangrove forests are made up of trees and shrubs that grow in coastal or brackish water, and their labyrinthine network of underwater roots have been adapted into the perfect habitat for a number of marine species. In between these cetacean gatherings we were treated to a host of adorable sea otters floating atop a giant kelp forest in , which is also home to the marvellously camouflaged sea dragon and the rather less aesthetically pleasing sea urchin and sea cucumber. By pursuing the turtle across the seabed, the shark effectively shepherds the turtle around the sea grass meadow, allowing the grass to regrow and sustain itself. Before long, 13 ft-long stingrays swoop down to take advantage of the banquet.
The land species will be adapted for taking advantage of the tide, gathering food quickly, and swimming. Despite its northerly position, the Gulf Stream current makes Svalbard habitable for humans as well as an array of. These seaweeds are actually a form of algae, and certain species can grow up to 260 ft tall. Even the sequence involving the terrifying metre-long Bobbit worm, which ambushes unsuspecting fish and drags them into its lair underneath the seafloor using razor-sharp pincers, was the scene of some heartwarming underwater teamwork. The first scene features a broadclub cuttlefish engaging in a hypnotic display to bewilder a passing crab, morphing their mantle and tentacles into different shapes and rapidly changing its colour by utilising specially pigmented cells called chromatophores. As with the grouper and octopus, this symbiotic relationship shows that the ocean is not always a dangerous place; until a larger turtle comes along and jumps the queue, of course.
To witness the magnificent wildlife spectacle that is turtle nesting, in Costa Rica offers the perfect place for sightings. They think and take on board more than you imagine. Yet here live many of the most spectacular predators in the ocean. Seal pups are a favorite, and she can detect them hidden in the snow from 2km away. A turtle heads to the reef's equivalent of a health spa - but she must use trickery to avoid the queue.
Eventually, join the fray, taking advantage of the bounty offered by these rich polar seas and the confusion spread among the herring by their smaller killer whale cousins. Then it exploded like a volcano — come on! Written by The visuals are spectacular. Gone is the beguiling footage of a tuskfish cracking open a clam against the backdrop of a tropical coral reef. In warm shallow water they rub vigorously against the gravel to slough off dead skin and encourage molting. We begin with the welcome sight of Sir David perched at the bow of a ship, who tells us that our oceans are changing at a faster rate than ever before. The abyssal plain covers more than half the Earth's surface. This journey is in fact a deadly gauntlet, with predators lurking in the shallows awaiting a fatal slip or misjudged leap.
From to , our trips put you in the right place at the right time to experience the wildlife that calls the upper parts of our ocean home. Some scientists even argue that some individuals may recognise each other from previous encounters. We must not allow ourselves to forget the global crisis that every living thing faces when the wonders of this documentary series are off our screens. Although a veritable conservation success story, the close-quarters nature of the herring hunt still poses a danger to the whales that participate in it: one large orca becomes trapped in a fishing net onscreen, and only survives once the fishermen onboard their boat receive permission via radio that they are able to release the net. Hats-off to the team who worked so much on this! But even then, trapped in the open, the octopus has one last trick up its sleeve to avoid becoming dinner.
Climate change trends are most pronounced in the , with the extent of Arctic sea ice in the summer having been reduced by 40% over the last 30 years. Plankton blooms and feeds fast hordes of migrating fish, walruses rake the seabed for clams, and minke and humpback whales gorge themselves on gigantic swarms of krill. There are a total of 8 episodes of Blue Planet. In spring, female polar bears emerge from winter dens with their cubs. But despite the fact that they breathe air, they do so through their skin, meaning they must moisten themselves constantly to avoid drying out and suffocating. They are painfully thin and horribly scarred. The sun's daily cycle is also vital.
Blue Planet - The Deep Key Concepts: Oceanic zones, euphotic zone, disphotic zone, aphotic zone, photosynthesis, chemosynthesis, adaptation, camouflage. We were also treated to another innovative sequence which brought us closer to unravelling another marine mystery. With the male gone, the dejected female and her offspring are likely to starve. Tectonic plates rip apart or collide in mighty clashes. Water, having a high specific heat, does not have the wide range of temperatures that air does throughout the year, but it can still vary in ways that affect the biodiversity present. Once thought to be as devoid of life as it is light, we now know that the deep ocean contains more living organisms than anywhere else on earth. But emperor penguins stay put and huddle together, incubating their eggs and rearing their chicks in the worst weather on the planet.