Symbiotic Relationships

Mutualism, Parasitism, Commensalism


Beneficial to both organisms involved.


- Bees and flowers (The bees eat and the flowers reproduce)

- Sea Anemone and clownfish (clownfish has a home and sea anemone shocks predators which keeps the clownfish safe)

- Bacteria (in intestines) and a human or animal (bacteria benefit because they get food and the human or animal is able to digest its food)


An organism, the parasite, is feeding off another organism. This could cause harm or death to the victim and they do not benefit from this.


- Tapeworms and humans or animals (Tapeworms attach themselves to the inside of the intestines and eat the hosts digested food which causes the victim to lose nutrients)

- Fleas and animals (Fleas bite on the victims flesh, suck their blood and causes itchiness. The fleas also get food and a warm home.)

*Parasites don't intentionally kill the host. It needs the host and its body functions (blood circulation and digestion) to survive.*


One organism benefits from the other (without affecting it.)


- Barnacles and whales (Barnacles have a place to live but whale does not benefit from it)

- Leopard shark and remora (Remora attaches itself to the leopard shark so it doesn't have to use its own energy to travel and the shark, of course, is unaffected.)

- Mites and flies, beetles and wasps (Mites use these organisms for transportation.)