Mr. Garcia brought a tank of fish for us to see. In it were Atlantic salmon and sturgeon. Mr. Garcia also told students in Mrs. Mankowsky's third grade that fish can jump up waterfalls. However, many of our natural waterfalls have been dammed, creating tall walls of water that fish cannot swim up. This interferes with their ability to breed, decreasing the number of fish in our rivers. In Turner's Falls, we have a fish ladder. The fish ladder slows the flow of the water and creates a shallower angle so that fish can make it to the top.