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Brief, basic information laid out in an easy-to-read format. May use informal language. (Includes most news articles)
Provides additional background information and further reading. Introduces some subject-specific language.
Lengthy, detailed information. Frequently uses technical/subject-specific language. (Includes most analytical articles)
Ocean abiotic factors
National Geographic: Ocean abiotic factors
This PDF has a comprehensive paragraph about each of the following abiotic factors of the ocean ecosystem:
What is a Marine ecosystem?
What Are Some Facts About Ocean Ecosystems?
The basis of ocean life is plankton, which are microscopic plants that move along ocean currents. Small animals such as krill eat plankton, and then progressively larger animals eat krill.
Interactive marine ecosystem map
Explore this interactive diagram to learn more about life in the sea. Click on the different labels to view short video clips or images about different parts of the marine ecosystem.
Ecosystems: Interactions and Relationships
Marine Food Chain and Webs
Marine Food Webs
Feeding relationships are often shown as simple food chains – in reality, these relationships are much more complex, and the term ‘food web’ more accurately shows the links between producers, consumers and decomposers
Image: marine food chain
An easy to understand diagram of the 4 levels of the marine food chain: Photo-Autotrophs, Herbivores, Carnivores and Top Predators.