1. Marine Biology
DAY 3
Drill: What are some abiotic and biotic factors that would affect organisms in a salt water fish tank?
Outcome: Define the different relationships between marine organisms. Compare marine symbiotic relationships.
Agenda:
Discuss interactions between marine organisms
Discuss Aquarium Project Expectations and Rubric

2. Competition What is Competition? There are two types of competition:
When two or more species compete for the same resource, space/food/light.
Ex. Connells barnacles
There are two types of competition:
Intraspecific - within one species
Interspecific - between species

3. Competitive Exclusion
What is Competitive Exclusion?
When a less successful species is replaced by a more successful one.
This happens often when an invasive species appears.
Organism not native to the area

4. Symbiosis
Symbiosis - ecological relationship between the individuals of two (or more) different species
Four examples of symbiosis:
Parasitism – One benefits, the other is harmed (+ , - )
Commensalism – One benefits, the other is neither helped nor harmed ( + , O )
Mutualism – Both benefit ( + , + )
Predator/Prey – One hunts and kills the other (+ , - )

5. Grouper Fish with a parasite
Parasitism Examples
Cymothoid isopod and
a snapper fish
Grouper Fish with a parasite

6. Commensalism Examples
Remora fish
Pearl fish and a sea cucumber
Shark with a remora fish

7. Mutualism Examples
Clown Fish and anemone
Boxer Crab and anemone

8. Predator/Prey Examples
Orcas and seal
Great White and seal

9. Symbiosis Let’s see if you can guess the symbiosis in these videos!
Four examples of symbiosis:
Parasitism – One benefits, the other is harmed (+ , - )
Commensalism – One benefits, the other is neither helped nor harmed ( + , O )
Mutualism – Both benefit ( + , + )
Predator/Prey – One hunts and kills the other (+ , - )

10. Symbiotic Worksheet
Read the 10 scenarios and determine if they are M: Mutualism, P: Parasitism, or C: Commensalism
When done show me your answers… if correct you can continue on your aquarium project!
Aquarium project
Open this poiwerpoint: GoodiesScienceGodichMarineBioU1d3_SymRelate
Go to the last slide and see additional requirements

11. Aquarium Project Goals for the Aquarium Project Name of Aquarium
Are there additional attractions?
Why is it so great?
Goals for the Aquarium Project
Name of Aquarium
Location
Why should people come
Cost (enter / build)
Organisms in the aquarium
Layout / BluePrint (sketch) with explanation
How they environment meets the needs
Filters/Temp control/Salinity
Organized and colorful (pictures!)
How will you stop them from eating each other?
Is the temp, lighting, space enough?
How will you make it meet the needs/lifestyle of the orgs?