In a typical ocean food web, primary consumers are organisms that eat producers (like kelp), while secondary consumers are organisms that eat primary consumers.
Based on the organisms you've listed:
- Kelp is a producer.
- Sea urchin is a primary consumer, as it feeds on kelp.
- Kelp bass is a secondary consumer, as it can feed on primary consumers like sea urchins.
- Sea otter is also a secondary consumer, as it feeds on sea urchins.
- Orca is a tertiary consumer, as it typically feeds on larger prey, including seals, sea lions, and sometimes smaller fish.
Therefore, the two secondary consumers in this food web are kelpbass and sea otter.