An ecologist has been studying a rock pool for a week. She has noted which plants and animals she has seen and what they are eating. Below are her notes.

Organisms
What they eat

Shore crab
Green seaweed , shrimps , small fish , whelks

Sea anemone
Plant plankton , animal plankton

Small fish
Shrimps , sea anemone , whelks

Seagulls
Small fish , crabs

Whelks
Green seaweed

Rock Pool Feeding Relationships: observation notes
Monday:I saw a shore crab eating some green seaweed. A sea anemone was eating by catching small particles of floating plants and animals.
Tuesday:Whelks are eating red and green seaweed. Small fish dart out from under rocks and catch shrimps.
Wednesday:The shrimps seem to be eating all the time. They are eating microscopic plants and animals. These organisms are called plankton. Animal plankton eats plant plankton in the rock pool. It is likely that sea anemones are eating plankton too.
Thursday:Observed the shore crabs more closely today. One was eating a shrimp it had caught. Another was eating a small fish, but I did not see it catch it. The crabs also eat whelks.
Friday:Small fish nibble at sea anemones. Seagulls occasionally land next to the pool. I have seen them eat small fish and crabs.

Task: Write down some daily and seasonal changes that might happen in the rock pool habitat. Choose a predator and prey and write down some adaptations that help them to survive. Draw some food chains or a food web using some or all of this information. Decide which type of feeder each organism is (primary consumer, etc) and identify the producers.