. >> kelp are just -- very beautiful organisms. a lot of different uses besides being good for biological diversity and ecosystems. they also have very good economic value, especially for human consumption that really tastes good. >> the artificial reef the team set up has attracted about 150 different marine organisms. the kelp has to grow for about 6 months before it can be harvested and eaten. reporter: how does it taste? >> it tastes salty and acidic. it's a little sour. >> bren thinks seaweed will be a key crop in the future. more than 40 countries have already expressed interest in his garden system. the stalks can be pickled like gherkins. and the leaves are often used as a substitute for pasta. after a short immersion in boiling water, they have a dark green color. his products are especially popular in new york restaurants, like the ribbon on the upper westside. >> the beauty of kelp is that it is so rich in nutrients and everything, and you don't always have to eat it hot here you can eat it cold, you can eat it as a sala

the video shows pile upon pile of golf balls hidden among the kelp beds and sharp rocks. they are hidden by dozens of golfers, hidden and forgotten until now. >> owes expecting a couple golf balls but the whole seafloor was littered with golf balls. it's almost like getting punched in the gut because there is so much beauty potential just being ruined by these golf balls. >> it was surprising particularly since no one until these two intrepid teenagers, had brought that to our attention . >> reporter: the video posted on youtube got the attention of the pebble beach company, which own the golf links and monterey bay national marine sanctuary charged with protecting the sensitive habitat. >> we're going to find out just how serious this is and work to clean up. >> reporter: the two teenagers have jumpstart the cleanup on their own and started a gofundme page to help with their tuition to study marine biology. it is believed to be the first underwater cleanup of golf balls here in the 97 year history. len ramirez kpix 5 the pebble beach company says there is no way to stop