And the fish have grazed the algae, so the turf of algae is a little lower.

And the algae give the corals sugar, and the corals give the algae nutrients and protection.

This is my baseline This is the Mediterranean coast with no fish, bare rock and lots of sea urchins that like to eat the algae.

Here's some algae in the foreground ...

This one disguises itself as floating algae.

The things on the ground are algae.

And it's covered with algae. That's what happens.

So this, for example, is hydrogen generating algae.

Zoning of algae beds in the Galápogos Islands

Lichens arose as a co op. Fungi married algae ...

Algae thrived in the extreme heat, poisoning the water.

So this is the infamous Caulerpa taxifolia, the so called killer algae.

But when it gets too hot, the algae can't make the sugar.

There's no coral, algae growing on it, and the water's pea soup.

The new nitrogen can promote the growth of algae and other organisms.

I floated through the world of plankton, searching for tiny algae to eat.

The first is that we have fossils of algae from 3.5 billion years ago.

Rivers washed sediment into the seas, until the organic remains of the algae were buried.

The Marine Environment Unit in the Space Applications Institute of the Joint Research Centre of the European Commission used space technology to monitor toxic algae blooms in the Baltic and to give early warning of the white tide in the Northern Adriatic sea.

The use of food micro algae to combat acute malnutrition in humanitarian emergencies and for sustainable development

Maybe there is a little bit of oxygen from some algae on the beach not far from here.

The most exciting prospect held out by Venter, however, is a form of algae that can absorb carbon dioxide from the atmosphere and use it to create diesel fuel or gasoline. Synthetic Genomics has a 600 million agreement with ExxonMobil to obtain fuel from algae.

Most of the biomass is low on the food chain, the herbivores, the parrotfish, the surgeonfish that eat the algae.

This is another version of that. This is a sea dragon, and the one on the bottom, the blue one, is a juvenile that has not yet swallowed the acid, has not yet taken in the brown green algae pond scum into its body to give it energy.

Just an amazing animal, it can change color and texture to match the surroundings. Watch him blend right into this algae.

After a few years, between five and seven years, fish come back, they eat the urchins, and then the algae grow again.

At the same meeting, the Secretary General of the Institution for the Use of Micro Algae Spirulina Against Malnutrition made a statement.

Boys, look, sea! Real sea!

It accepts algae and detritus in one end, and through this beautiful, glamorous set of stomach organs, out the other end comes cleaner water.

Most of us don't have fungi or algae in our brains, so what is our brain going to do if we put that in?

Here we're going to see one backing into a crevice, and watch his tentacles he just pulls them in, makes them look just like algae.

There's one last elephant in the room, the proteins themselves, which come from algae and bacteria and fungi, and all over the tree of life.

Stresses the benefits of food micro algae as a concrete aid in reducing acute malnutrition in food emergencies and chronic malnutrition among severely disadvantaged populations

The Chinese mainland's coasts are surrounded by the Bohai sea, the Yellow Sea, the East China sea and the South China sea.

We end up with things we've heard about before red tides, for example, which are blooms of toxic algae floating through the oceans causing neurological damage.

Sea...

Swimming in the sea doesn't mean owning the sea.

And one sea, and twelve oxen under the sea

And one sea, and twelve oxen under the sea

This sleeve is a live sea cucumber, cucumber sea.

Adriatic Sea.

Baltic Sea.

Mediterranean Sea.

Red Sea

Aegean Sea