Ocean's

The ocean's supposed blueness comes entirely from the sky.

The ocean's blueness comes from the same atmospheric conditions that make the sky blue.

For over a year the bottle drifted about, now north, now south, as the ocean's currents drove it.

A thermocline is the transition layer between warmer mixed water at the ocean's surface and cooler deep water below.

The ocean's abyss pulled me in, deeper and deeper.

Benedito swam in the ocean's cool water.

She embraced the ocean's salty breeze.

Of all the witches that may be found in all the fairy tales ever told there is none more delightfully sociable than the Sand Witch. This Witch, who lives underneath the heaps of sand at the ocean's edge, where, in the summertime, you dig with your shovel, is not at all like other witches. She never rides on a broomstick, and she never goes down chimneys. In the first place there are no broomsticks or chimneys on the beach at the sea-shore, and in the second place she would not know how to ride on a broomstick or climb down a chimney, if there were. All the Sand Witch knows how to do is to sink into the sand when anything scares her, and to come up through the sand when she sees a chance to get acquainted with a person she never was acquainted with before. So now you know what a Sand Witch is. And if Junior Jenks, seven years old, and dreadfully sunburnt, had known what you know, he would have been much better prepared to face the one that came up right under his nose all of a sudden one hot July morning.

The United Nations estimates that each one of us uses nearly 140 kilograms of plastic each year. At least 6.4 million metric tons of that plastic has ended up in the oceans. Environmental activist Captain Charles Moore has found that in some areas, plastic outweighs zooplankton — the ocean's food base — and is entering the food chain. Our reporter talked to Capt. Moore about his efforts to document ocean pollution.

Roark says the long-lived corals are important not only because they support many other forms of marine life, but because they also open a window on the ocean's ancient history.