Symbiosis: Want Ads for Mutualism  By John Wiley & Sons, Inc.
Updated on Dec 14, 2010  Some organisms live in symbiotic
relationships—close associations of two different species. The
type of symbiotic relationship in which both organisms benefit
is mutualism. One example of mutualism exists between the clown
fish and the sea anemone. The anemone provides a habitat and
protection for the clown fish, while the clown fish attracts
prey for the anemone. In this activity you will write a want ad
for a mutualistic relationship. Following is one way a want ad
from the clown fish to the sea anemone might read.   Index card;
Pencil or pen     1. Read the following information about the
relationship between the Egyptian plover and the Nile crocodile:
Birds known as Egyptian plovers live around the Nile River. They
feed on parasites that live in the mouths of Nile crocodiles.
The consumption of the parasites gives the plovers much-needed
food and also relieves the crocodiles of harmful parasites that
suck their bl