Hooper Bay has twice as many pounds of lobster than the two other harbors combined. If the other two harbors have 80 pounds of lobster each, how many pounds of lobster are the three harbors holding?
Since the other two harbors have 80 pounds of lobsters each, they have a total of 80+80= <<80+80=160>>160 pounds of lobster.
Since Hooper Bay has two times more lobsters than the other two harbors combined, it has 2*160 = <<2*160=320>>320 pounds of lobster.
In total, the three harbors have 320+160 = <<320+160=480>>480 pounds of lobster.
#### 480