| Answer | Crossword Clue |
|---|---|
| BASKINGSH | Large plankton feeder |
| dinoflagellate | A single-celled organism with two flagella, occurring in large numbers in marine plankton and also found in fresh water. Some produce toxins that can accumulate in shellfish, resulting in poisoning when eaten |
| dinoflagellates | A single-celled organism with two flagella, occurring in large numbers in marine plankton and also found in fresh water. Some produce toxins that can accumulate in shellfish, resulting in poisoning when eaten |
