Name _____________________
Due_________________
Ocean Food Web 8.11a, b, d
Notice which direction the arrows point. The arrows indicate what each organism eats; arrows always point
from the “food” to the “eater.” For example, an arrow could point from a rabbit to a wolf.
Answer the following questions about the food web:
1. What do polar bears eat? _____________
How do you know? The arrow points from the ______________________ to the _____________________.
2. What does the Beluga whale eat? _________________, _________________, and ________________.
3. What animals eat silversides? _____________________________________________________________
_______________________________________________________________________________________
4. Find algae plankton. Why are no arrows pointing to it? _____________________________
5. Arctic cod is a common commercially fished species. Which 2 animals compete with humans for arctic cod?
__________________ and _________________
6. Polar bears are predicted to be extinct by 2050. How might this impact the Ringed seal population?
_________________________________________________________________
7. According to the drawing, the disappearance of what abiotic factor will affect polar bears the most?
_________________________________________
8. If you wanted to draw something to point to the algae plankton, what would you have to draw to show where
plankton get their energy from? ______________
A Coral Reef Food Web
The table below lists some of the feeding relationships in a coral-reef habitat. On a separate paper, draw the
food web described in the table. (You may write the names of the organisms instead of drawing pictures of
them.)
Coral-Reef Organisms
Eat…
Are eaten by…
Algae
Make their own food
Animal plankton, sea urchins
Animal plankton
Algae
Shrimp, small fish
Sea urchins
Algae
Small fish
Animal plankton, shrimp
Octopus, squid
Shrimp
Animal plankton
Small fish, octopus, squid
Octopus
Small fish, crabs, shrimp
Squid
Crabs, shrimp, small fish
Crabs
Scraps of dead organisms
Octopus, squid
Clams
Scraps of dead organisms
Sea stars
Sea stars
Clams
Otters