Marine Invertebrates Diversity & Relationships
Marine Invertebrates Objectives
For six of the marine invertebrate phyla (Porifera, Cnidaria, Echinodermata, Mollusca, Annelidia, Crustacea):
- Describe the key characteristics of the phylum.
- List examples of organisms in the phylum.
Whether you are exploring a tide pool along the coast, snorkeling in a coral reef, or setting up a saltwater aquarium at home, marine invertebrates are the diverse and attention-grabbing animals of ocean habitats.
This video introduces marine invertebrates you are likely to encounter.
Select the tab of each invertebrate phylum for additional information
Poriferans
Phylum Porifera
Porifera (pronounce: pore-if-er-a) are commonly called the sponges. These are structurally simple animals with no distinct organs. Porifera means “pore-bearing,” and the pores are openings through which water and the microorganisms they eat enter, and wastes leave.
This is an alternate view of the six commonly encountered Phyla of marine invertebrates.
These are photos of a few of the species we’ve kept in our tanks.
These “sexy shrimp” as they are called in the pet trade, communicate through their movements. These shrimp have just come together after I startled them cleaning the tank. glass.
What Phylum are shrimp classified in?
Sponges may be simpler than other animals in structure, but they still have interesting structures that vary by species.
Which Phylum are sponges classified in?
Looking for a challenge? How many different Phyla are represented by the organisms in these sketches?
This is the end of guide 6B. Please proceed to the product page.
Check your knowledge. Can you:
For six of the marine invertebrate phyla (Porifera, Cnidaria, Echinodermata, Mollusca, Annelidia, Crustacea):
- describe the key characteristics of the phylum?
- list examples of organisms in the phylum?
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Organism Care Guide Contents
Complete all four of these sections before taking the quiz and making your media piece.
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This week’s overview
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6B: Organism Care
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