Marine Invertebrates (N-32)
requirements for the Marine Invertebrates honor are as follows:
Skill Level 2
- Be able to identify at least one example of fifteen of the
following seashore animals:
- Tunicate (sea squirt)
- Anemone (sea flower)
- Hermit crab
- Brittle star or serpent star
- Sea urchin
- Sea cucumber
- Bryozoa colony (moss animal)
- Common starfish
- Mussel or clamworm
- Tube worm
- Amphipod (sand flea)
- Sand dollar
- Ghost crab
- Make a collection of the following seashore animals:
- Three kinds of crabs
- One kind of starfish
- Any other five animals listed in requirement No. 1
Hard-bodied animals, such as crabs, starfish, and chitons,
may be killed in a 5% solution of formaldehyde or a 70% solution
of alcohol, and then dried by a fire. The sun will cause the
color to fade. Soft- bodied animals must be kept in a 3%
solution of formaldehyde or a 70% solution of alcohol. If
commercial formalin is used in place of formaldehyde, the above
percentage figures should be doubled.
- Describe the following processes:
- The swimming action of a jellyfish
- The method of an anemone capturing food
- The running of a crab
- How does a starfish digest a clam or oyster when it has
such a small mouth opening?
- Name four low-tide animals and two high-tide animals.
- Answer the following questions on relationships:
- What relationship do crabs and barnacles have to insects?
- What relationship does the sea squirt have to man?
- Name a common land dweller that is related to the clamworm.
- The octopus belongs to the phylum Mollusca. Which two
animals listed in No. 1 are related to the octopus?
- Give an oral report on two of the following activities:
- Visit a seashore at night and by means of a flashlight
observe the activity of animals on shore and in the water.
Notice the thousands of plants and animals visible when the
beam of light is directed into the water. These minute
organisms are called plankton.
- Tow a fine-mesh cloth or regular plankton net through the
water and observe through a microscope the many tiny animals
and plants that are collected.
- Select three items under No. 1 that are important
economically. Explain why they are important.