Drinking and eating: Eel grass use/drink water to survive.
Keeping Clean: No Answer
Playing: No Answer
Other: Eel grass did provide food for the Seri Native American tribe. Also, eel grass was used as insulation for houses and sometimes people had eel grass roofs, which were very durable. Eel grass has also been used as packing material and as stuffing for mattresses and cushions. For tiny marine animals eel grass is a small food factory. Eel grass provides food for many invertebrates.