there are two secondary ocean consumers comb jelly fish and cnidarian which includes octopus
primary and secondary consumers
A secondary consumer is one that eats a primary consumer, and is therefore either carnivorous or omnivorous. These trophic levels are not innate to the organism, and it can change its behavior and therefore its place in the food chain. Producers cannot become consumers, and consumers cannot become producers, but secondary consumers can become primary consumers, or tertiary consumers, etc. Two examples of secondary consumers in the ocean would be the orca (a carnivorous mammal), and the whale shark (an omnivorous fish). Secondary consumers are not necessarily apex predators, although those two are. Squids are also typically secondary consumers, and are not apex predators.
Comb jellyfish and cnidarians which includes octopus
Volcanic gases and ash are two examples of secondary pollutant
Examples of primary fuels - wood, coal Examples of secondary fuels - charcoal, coke
I suppose crocodiles and alligators are two examples.
Common examples for secondary data are newspapers, books and internet. Some examples for primary data are questionnaires, interviews and observations.
Two examples are the Pacific Ocean and the Atlantic Ocean. Both are a very large expanse of sea.
Zoo plankton Green sea turtles Manatees Dugong Mullet