Every year, biologists in Alaska launch an underwater video camera they call the Salmon Cam. The device can provide video of salmon in action as they make their summer trip upstream. Avi Arditti has more about this "must-see" video.

The salmon are swimming in waters that pass through Tongass National Forest -- the largest national forest in the United States.

The salmon make this trip every year. The adult fish struggle upstream, sometimes traveling hundreds of kilometers from where they start, in the ocean. They are going back to the freshwater areas where they hatched years earlier. After returning, they will mate, produce eggs and die.

Every year, the United States Forest Service puts a camera in the water to document the salmon's trip. Pete Schneider is a biologist with the Tongass National Forest.

"The fish come right up to the camera sometimes or you get to see how they chase other fish away. Or you can see them digging their nests in the rocks and gravel. You can be in at their level and look at them almost eye to eye."

Pete Schneider has been operating the Salmon Cam every year since 1997. This year, he put it in the waters of Steep Creek, where sockeye salmon mate and lay their their eggs.

Mr. Schneider says sockeye salmon are very tasty fish.

"Their meat is highly prized. It keeps very well, so a lot of the native tribes would seek out sockeye in particular because it cans and smokes very well."

After the salmon have reproduced, they die in Steep Creek. Their bodies make a tasty meal for meat-eating creatures. Other animals visit the stream for the food. Bears, eagles and even wolves enjoy a fish dinner. Pete Schneider says the fish are an important food for the whole coastal ecosystem – not just people.

"It goes beyond just the eagle and the bear and the humans. It really feeds the insects and the plants and the soils benefit from it."

And he says all very small organisms and creatures without backbones profit indirectly from the salmon. Their bodies fertilize the stream banks and feed the forest.

Later, when the eggs hatch, small fish and animals will feed on the fry, or baby salmon. The young fish travel downstream to the ocean. There some become a meal for larger fish, birds, seals, whales and fishermen.

In a few years, the surviving fish battle again to swim upstream. Scientists and fishermen are studying this series of events. As Pete Schneider says, there is still a lot to learn about salmon. I'm Avi Arditti.


And a birthday anniversary note:
A red-haired icon of television comedy...

Finally, television and film actress Lucille Ball was born on August 6, 1911. She was especially important to the development of television as popular entertainment in the 1950's.

Lucille Ball probably will always be remembered for her role as the silly but lovable red-haired Lucy Ricardo in the hit show, "I Love Lucy." Her real-life husband at the time, Desi Arnaz, also played her husband in the CBS comedy series.

Desi played the role of Ricky Ricardo, a Cuban-American singer and band leader who dealt patiently with Lucy's happily crazy behavior. Aided by her friend Ethel (that was Vivian Vance) Lucy was always plotting some wild scheme to perform with her husband's band or get a part in the movies.

Lucy: "Uh, what'll I have to do?"
Ricky: "You gonna get me back on the television show."
Lucy: "How?"
Ricky: "I don' know how..."

Sometimes Desi would get angry and shout at her. And sometimes she would make fun of the way he spoke English.

Ricky: "...but if you don't, I'll, I'll..."
Lucy: "I will, Ricky. I'll get you back on the show. Don't even think of what you'll do if I don't" [she imitates his Cuban accent]

But the programs always ended happily.

Many of the "I Love Lucy" shows have become classics and scenes from them are still seen on television around the world.

In addition to "I Love Lucy", Lucille Ball starred in other television comedies and had a long career as a television executive. She died in 1989.

And that's As It Is for today. From VOA Learning English, I'm Steve Ember. See you next time.