Arctic Ecosystem Food Web
by Neta Penner
1. Sea Urchins (Primary Consumers) Second Trophic Level
2. Sea Otters (Secondary Consumers) Third Trophic Level
3. Orcas' (Killer Whales) [Tertiary/Quaternary Consumers] Fourth/Fifth Trophic Level
4. Sea Lions (Tertiary Consumers) Fourth Trophic Level
5. Kelp (Primary Producers) First Trophic Level