"Pond Full of Fish" is a Sesame Street song performed by a school of fish. They explain that underwater plants are their source of life, and if the water is polluted, the plants may disappear and so will they. So, they ask the viewer to keep their water "pure and clean", so they and the plants can thrive.

Notes

• The fish are voiced by Kevin Clash, Ivy Austin, David Rudman and Camille Bonora.