Educational worksheet illustrating energy flow in marine ecosystems through a food chain diagram, highlighting producer, herbivore, and carnivore roles among organisms like krill, diatoms, squid, tuna, and shark.

A worksheet titled "Energy Flow in Ecosystems" focusing on food chains and food webs, featuring a diagram of marine organisms including krill, diatoms, squid, tuna, and shark, with arrows indicating feeding relationships and labels for producer, herbivore, and carnivore roles.