5 facts about the giant clam:
- It may weigh over 400 pounds
- It can live for more than a hundred years
- Growing in the flesh of this huge creature are tiny, plantlike organisms called zooxanthellae
- The nutrients they directly provide make up two-thirds of what the clam needs
- Stuck in one place, the clam filters plankton for the remaining one-third of its food
Scuba-love and bubbles!