Hello crossword solvers! Today let's find the answer to the clue Algae in an undersea 'forest' from the USA Today crossword. After we've gathered any other hints from the USA Today crossword puzzle and all possible helpful and relevant information from other sources, we are ready to solve the clue Algae in an undersea 'forest'. The answer we found for the clue Algae in an undersea 'forest' is: