The makers of the Bafta-winning documentary My Octopus Teacher want to preserve the underwater ecosystem it features. The documentary focuses on a film-maker who befriends an octopus – but the unsung star of the show is the kelp forest off the coast of Cape Town. It is one of the richest ecosystems in the world. The makers of the film are part of a campaign to preserve the aquatic forest.
Siesta Beach is a beach located on Siesta Key in the U.S. state of Florida. Unlike beaches elsewhere that are made up mostly of pulverized coral, Siesta Beach’s sand is 99% quartz, most of which comes from the Appalachian Mountains.
Thilafushi, an island of floating rubbish island in the Maldives, grows by a square meter a day. But diving instructor Shaahina Ali is trying to slow that growth by recycling and using floating barriers to hold back the rising seas.
For decades, the Maldives simply dumped the trash the tourists and the island country’s 400 thousand residents generated. Yet Shaahina Ali says that has to stop. Almost every day, the diving instructor and her allies go from island to island in the Indian Ocean. Working with an environmental organization, they have obtained trash compactors that make plastic waste transportable, allowing it to be shipped abroad for recycling. Ali also advocates avoiding disposable plastic. She gives lectures, advises hotel managers and even bends the ear of the Maldives’ president himself.
When she has time, Shaahina Ali goes scuba diving. Beneath the waves she sees environmental degradation – dying corals and fish caught up in plastic waste. She says, “We can’t afford to address just one problem. We’ve got to take care of everything at once because everything is connected to the sea.” But the island paradise is not only threatened by rubbish. Climate change is also causing the sea levels to rise, and the Maldives are at risk of sinking beneath the water.
That’s why conservationists are using floating barriers made of recycled plastic to help prevent flooding. In addition to the environmental group “Parley for the Oceans,” Ali has also won politicians to her cause. Last year saw a democratic change of government in the Maldives. “The new government no longer views environmentalists as annoying troublemakers. They see us as partners instead,” Ali says. But those trying to save the island are in a race against time. “If we don’t succeed,” says Shaahina Ali, “far more than a vacation paradise will be lost. We will lose our homeland.”
Searching for ways to reduce our reliance on fossil fuels, engineers and entrepreneurs are looking to a largely untapped potential source of renewable energy: wave power.
Itching to explore but don’t want to leave the house? Behold these Peak Exploration moments from David Attenborough’s Great Barrier Reef! These moments plus so much more will start streaming March 4th on Paramount+.
For years, one of South Africa’s great tourist attractions has been the opportunity to see great white sharks up close. But barely any great white sharks have been spotted off the coast of Cape Town, South Africa for two years now – where there used to be hundreds.
Science journalist Rachel Cernansky joins host Sarah Crespi to talk about progress on Africa’s Great Green Wall project and the important difference between planting and growing a tree.
Sarah also talks with Václav Kuna, a postdoctoral researcher at the Institute of Geophysics of the Czech Academy of Sciences, about using loud and long songs from fin whales to image structures under the ocean floor.
The humpback whale is a species of baleen whale. It is one of the larger rorqual species, with adults ranging in length from 12–16 m and weighing around 25–30 t. The humpback has a distinctive body shape, with long pectoral fins and a knobbly head.
The Ocean Cleanup, a non-profit organization, is developing advanced technologies to rid the world’s oceans of plastic.
Every year, millions of tons of plastic enter the oceans primarily from rivers. The plastic afloat across the oceans – legacy plastic – isn’t going away by itself. Therefore, solving ocean plastic pollution requires a combination of stemming the inflow and cleaning up what has already accumulated.
Dutch inventor Boyan Slat founded The Ocean Cleanup at the age of 18 in his hometown of Delft, the Netherlands.
We are a registered charity as a ‘Stichting’ in the Netherlands, and a 501(c)(3) in the US.
The Ocean Cleanup’s team consists of more than 90 engineers, researchers, scientists and computational modelers working daily to rid the world’s oceans of plastic.
The largest tidal waves, tsunamis, and other types of waves throughout history. Never turn your back to the sea.
- #1 Lituya Bay, Alaska – On the night of July 9, 1958, an earthquake along the Fairweather Fault in the Alaska Panhandle loosened about 40 million cubic yards (30.6 million cubic meters) of rock high above the northeastern shore of Lituya Bay. This mass of rock plunged from an altitude of approximately 3000 feet (914 meters) down into the waters of Gilbert Inlet (see map below). The impact force of the rockfall generated a local tsunami that crashed against the southwest shoreline of Gilbert Inlet. The wave hit with such power that it swept completely over the spur of land that separates Gilbert Inlet from the main body of Lituya Bay. The wave then continued down the entire length of Lituya Bay, over La Chaussee Spit and into the Gulf of Alaska. The force of the wave removed all trees and vegetation from elevations as high as 1720 feet (524 meters) above sea level. Millions of trees were uprooted and swept away by the wave. This is the highest wave that has ever been known.
- #2 Krakatoa tsunami – The 27 August 1883 explosion of Krakatau Volcano in Indonesia is one example of an eruption-caused tsunami. The eruption generated a 30m tsunami in the Sunda Strait which killed about 36,000 people, as it washed away 165 coastal villages on Java and Sumatra.
- #3 2004 Indian Ocean earthquake and tsunami occurred at 07:58:53 in local time on 26 December, with an epicentre off the west coast of northern Sumatra, Indonesia. It was an undersea megathrust earthquake that registered a magnitude of 9.1–9.3 Mw, reaching a Mercalli intensity up to IX in certain areas.