A food chain in the ocean begins with tiny one-celled organisms called diatoms, which make their own food from sunlight. Shrimplike creatures eat the diatoms. Small fish eat the shrimplike creatures, and bigger fish eat the small fish.
Encyclopædia Britannica, Inc.
(Student Encyclopedia (Ages 11 and up))
The order in which matter and energy in the form of food is transferred from one organism to another is called a food chain. Food chains start with a primary producer that makes its own food. An example of a primary producer is a plant, which converts solar energy to food by photosynthesis. Any ...