Why is the ocean blue?

When we think of the ocean, our mind is invaded by the picture of a vast mass of blue water. But why does the sea appear in our eyes in bluish tones, even though water is perfectly clear?

A glass of water reveals nothing but a transparent liquid. However, when we get to the beach on a sunny summer morning, we're blessed by a wide and visibly infinite field of blue saltwater.

So, could it be that the ocean is blue because it reflects the sky? Does the color of marine life influence the hue of the sea? The answer to the enigma is pretty straightforward.

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25 shocking facts about water pollution

The causes and effects of water pollution are various, well-known, and fully documented. The blue planet that we once knew is something of the past. Here's why H2O is the new gold.

Nevertheless, we continue to treat the main component of Earth's oceans, lakes, rivers, and living organisms as a dispensable commodity.

We sometimes forget that around 45 percent of the world's population lives within 90 miles (145 kilometers) of the ocean and that roughly 43 percent of the planet's humans depend on seafood as the primary protein source in their diet.

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Drone saves two Australian swimmers from drowning

A drone saved the life of two distressed young swimmers caught in high surf in a beach near Lennox Head, in New South Wales, Australia.

A group of Australian lifeguards was testing the use of drones in lifesaving operations when they spotted two boys in trouble using the unmanned aerial vehicle's (UAV) camera.

And what was supposed to be practice flight became a real-life rescue. In no more than 70 seconds, the drone flew above the young men and released the inflatable rescue pod.

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Anthony Vandenberg has once again participated in the Shackleford Challenge 2018 in Cedar Island, North Carolina. This time, he had a close encounter with a shark.

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