Why is the Blue Lake Blue?

Once thought to be bottom less, it measures 72 metres deep. Groundwater has filtered down to this layer and which in turn has become an aquifer for the region. Each year around the end of November, the lake turns from grey into a vibrant turquoise shade of blue.

Why is the lake blue?

Water molecules absorb longer, visible wavelengths (e.g. red light, 600-700 nm) while shorter, blue wavelengths (< 500 nm) pass deeper into the water column. These short wavelengths scatter to create a deep blue color in clear lakes.

Can you swim in the Blue Lake?

No, you can’t swim in the Blue Lake. But there is the “Little Blue Lake” about 10 minutes out of Mount Gambier at Mount Schank. People have been swimmimng there for years.

How was Blue Lake formed?

The Blue Lake was formed when the volcano erupted through the limestone allowing the underground water to fill the crater, creating the lake that we see today. The lake itself is thought to be between 72 and 75m deep., and provides the town with drinking water.

Is the Blue Lake a sink hole?

The Little Blue Lake is a popular venue for visitors and locals to enjoy a naturally cool swim in a beautiful natural water filled sinkhole. Stairs and a floating pontoon, to improve safety and public access to the water’s edge, have been installed via an artificial cutting in the south side of the cliff.

Can you swim in the Kilsby sinkhole?

Go swim in a sink hole! Great fun tour. All equipment was clean and quality. Tour was informative and swimming in a sink hole is a must do.

Have they found the bottom of the Blue Lake?

Divers have reached the bottom of Mount Gambier’s iconic Blue Lake for the very first time. There’s very few first time expeditions in the world that adventurers can embark upon. Deserts have been crossed, man has landed on the moon and mountain peaks have been scaled.

Is the Blue Lake extinct?

The Blue Lake/Warwar in Mount Gambier occupies one of the craters of the extinct volcano after which the city has been named. Early each November, the lake’s sombre blue, which is in evidence during the winter months, mysteriously changes to an intense deep turquoise blue almost overnight.

What’s the clearest lake in the world?

Blue Lake

Located in the top half of New Zealand’s South Island, Blue Lake is said to be the clearest lake in the world. Its waters are fed by another lake that sits above its height of 1,200 meters above sea level.

Why is blue Nelson lake so clear?

The lake is spring fed from the neighboring glacial Lake Constance, but the water passes through landslide debris that forms a dam between the two lakes. The natural dam filters out nearly all the particles suspended in the water giving the lake the most intense natural blue-violet colour.

Where is the purest lake in the world?

New Zealand’s South Island

Two lakes. Blue Lake (below), in New Zealand’s South Island, is the clearest lake in the world.

Where is the ocean water clear?

1. The Maldives. The Maldives, located in the Indian Ocean, have around 1,190 islands and sandbanks. A lagoon with crystal clear water encircles all the islands, which are protected by a reef structure that is home to an array of underwater life.

Which ocean is not salt water?

Arctic Oceans

The major oceans all over the Earth are the Atlantic Ocean, Pacific Ocean, Indian Ocean, Antarctic, and Arctic Oceans. All oceans are known to have salt in a dissolved state, but the only oceans that have no salt content are the Arctic and Antarctic Oceans.

What ocean is the dirtiest?

Mediterranean Sea



The Mediterranean is probably the most polluted ocean in the world. The United Nations Environment Programme has estimated that 650,000,000 tons of sewage, 129,000 tons of mineral oil, 60,000 tons of mercury, 3,800 tons of lead and 36,000 tons of phosphates are dumped into the Mediterranean each year.

Which ocean is cleanest?

The Weddell Sea has been claimed by scientists to have the clearest waters of any ocean in the world.

Why is Hawaii water so blue?

The reason the ocean is blue is due to the absorption and scattering of light. The blue wavelengths of light are scattered, similar to the scattering of blue light in the sky but absorption is a much larger factor than scattering for the clear ocean water.

Which ocean is colder?

The Arctic Ocean

The Arctic Ocean is the coldest ocean, with average temperatures of about 28°F, but with global warming the arctic is heating twice as fast as the rest of the world. This body of water is also the smallest of the world’s oceans.

What kills sea life?

While it’s difficult to know exactly how many marine animals are killed by plastic pollution, it’s been estimated that plastic pollution kills 100,000 marine mammals every year. 81 out of 123 marine mammal species are known to have eaten or been entangled in plastic, and all seven sea turtle species are affected.

How hot would it be without the ocean?

To understand how much heat that is, think of it this way: If the oceans weren’t absorbing it, average global temperatures on land would be far higher—around 122°F, according to researchers on the documentary Chasing Coral. The global average surface temperature right now is 59°F.

Why do dolphins eat plastic?

Over 700 marine species, including half of the world’s cetaceans (such as whales and dolphins), all of its sea turtles and a third of its seabirds, are known to ingest plastic. When animals eat plastic, it can block their digestive system, causing a long, slow death from starvation.

How do whales eat plastic?

Whales like the blue whale have baleen plates in their mouths that act as filters, trapping their small prey as well as small bits of plastic. This means they are less likely to ingest larger plastic waste items like bottles and containers, but the small plastic bits they consume quickly pile up.

Why do whales explode?

Quote from video:Its body begins the decomposing process releasing various gases like carbon dioxide methane etc that start to build up in its stomach. And other large internal organs.

How do you adopt a whale?

Adopt a Whale for 1 Year: $60

1. Personalized adoption certificate with a photo and information about your whale.
2. Free domestic shipping via USPS (note: international orders will receive a digital certificate).
3. Email updates about whales and about your whale, if re-sighted, during the year of your adoption.