Name: 海の下の農場は2050年に世界を養う可能性がある (Farms under the sea could feed the world in 2050)
Uploaded: 2021-01-14T08:14:26.000Z
Duration: 6 min 5 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

This small mussel farm off the coast of California

is a window into the future of feeding the planet.

- You can feed a vast majority of the world's populations on mussels alone.

that we'll need to produce more food in the next 50 years

- People are really actively looking towards the ocean for the future.

Oceans cover more than two thirds of the earth's surface.

But right now, they produce just 2% of our food.

- You can't take any more fish out of the ocean.

Phil Cruver is part of a new wave of entrepreneurs

proving ocean farms can help feed the world

It will be the first time we've had a harvest in U.S. federal waters

Phil Cruver started and sold several tech businesses

before deciding to farm the waters off of Los Angeles.

- The carrying capacity out here is just enormous.

Right now, the mussels caught at the Catalina Sea Ranch

- We're starting off with mussels as our cash crop

Currently, almost all the food we eat comes from the land,

and 40% of that arable land, we produce food on.

That's immense amounts of space for something that we could do

in a much smaller amount of space in the ocean.

Growing food on land is also a dirty business.

Worldwide, livestock accounts for about 15%

of human induced greenhouse gas emissions.

It's also very inefficient and expensive.

- It requires anywhere between six to seven pounds of feed

And so that requires an immense amount of water

So many are looking to the sea to help feed the world.

But overfishing has left much of the oceans

We are at a point now that scientists call 'Peak Fish'.

- So 'Peak Fish' means when did we get to a point

where we no longer were able to take more out of the ocean.

- But the amount of fish we're catching is plateauing.

we have way too many fishing boats out there right now.

Most of the fish that's farmed at the moment

They're fed with a diet of fish lower in the food chain,

which means more fishing is needed to feed the fish we eat.

Nearly one-third of the global marine fish catch

- Right now, they're getting it at as low as one to one.

So one pound of feed for one pound of fish.

They just filter their food from the water.

- Mussels are good to farm for a variety of reasons.

First, a lot of the things you associate with bad farming on land --

cramped quarters, use of questionable foods,

Mussels like tight spaces, they don't need a lot of antibiotics,

Ryan Bigelow runs operations for Seafood Watch,

a Monterey Bay Aquarium program that promotes sustainable seafood.

has had a bad reputation for pollution spreading disease

In some countries, these remain big problems,

but new companies are showing it can be done well.

- Fish farming is by no means a perfect business.

There have been issues in the past with everything from escapes

to pollution, to the destruction of mangroves.

And some of those things still do happen.

But the difference now between aquaculture,

even 15, 20 years ago, is that they're our best performers.

And aquaculture has a lot of room to grow in the U.S.

- So right now, 90% of all aquaculture happens in Southeast Asia.

finfish producers in the world for Atlantic Salmon.

The U.S. hasn't allowed aquaculture in federal waters until now.

Phil thinks that means there's a huge opportunity here.

Several companies are already planning to open

Today's harvest is small, just 1000 pounds.

the mussels go directly to a seafood distributor