The ornately colored sea anemone (uh-NEM-uh-nee ... establish symbiotic relationships with green algae. In exchange for providing the algae safe harbor and exposure to sunlight, the anemone ...

The starlet sea anemone (Nematostella vectensis) has impressive regenerative abilities, allowing it to grow a new head or foot if cut off. If sliced in half, each piece turns into a complete anemone.