Ponds are a type of freshwater ecosystem that has shallow and slow-moving water (is lentic), and, because it's shallow, light can reach the bottom of it.
Some organisms that we can find living in a pond are the following:
0. Water lilies
,1. Frogs
,2. Turtles
,3. Fish
,4. Geese
,5. Dragonflies
,6. Algae
,7. Cyanobacteria
,8. Ducks
,9. Water snail
,10. Duck potato
,11. Earthworms
,12. Mosquitos
,13. Pond skater
,14. Newts
,15. Mosquito fern/fairy moss
,16. Duckweeds
,17. Watersnake
,18. Salamanders
,19. Water beetle