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BIO 152
Atlantis Marine World Field Trip
NAME___Answer Key__________
Introduction:
In lecture, you have been introduced to the diversity of life. You have learned that the Animal Kingdom consists of distinct subgroups
called Phyla. Each of these Phyla has unique characteristics that define the group of organisms that belong to the Phylum. For the
Phylum Chordata, you have also learned about the Classes within the Phylum. During your visit to Atlantis Marine World, you will
have the opportunity to observe animals that belong to some of the major Phyla of the Animal Kingdom. In preparation for our field
trip, your homework assignment is to list some of the major characteristics of each phyla or class listed below. During our trip to the
aquarium, you are to find an example of an animal in each Phylum or Class and write down its name and the exhibit/tank in which it
was found.
Phyla
Class
Characteristics
Name of
Location: Exhibit or Tank
Representative Animal
in Aquarium
Porifera
Not applicable
Spongin matrix, many pores
in bidy, assymetrical
sponges
Coral reef tank
Cnidaria
Not applicable
Stinging cells
tentacles
radial symmetry
Moon jellies
anemones
Mollusca
Cephalopoda
Reduced shell or no shell
Ring of arms with suction
disks
Active predators
Spiral shell
Or no shell (slugs)
Muscular foot for moving
Giant Pacific Octopus
Cuttlefish
Tank upstairs- walk past shark
tank
Clownfish/anemone tank or in
tanks upstairs in small room
Tanks to the left as you walk into
room past the bridge – across
from seahorses
Gastropoda
Whelks
Touch tank
Phyla
Class
Characteristics
Name of Animal
Location
Bivalvia
Hinged shell with two valves
Filter feeders
Siphons and foot
Clams, oysters,
mussels
in touch tank
in lagoon under bridge
Arthropoda
Crustacea
exoskeleton
jointed appendages
In small tanks to the left of the
touch tank
Echinodermata
Not applicable
Spiny skin
Pentaradial symmetry (body
parts in multiples of 5)
Japanese spider crabs,
lobsters, shrimp,…etc
Many examples
Horseshoe crabs
seastars
Chordata
Osteichythes
Coral reef fish, flounders,
electric eels, grouper, etc.
Many examples
Many tanks throughout
Sting rays, cownose rays
Dogfish sharks
Sting rays, nurse sharks,
sand tiger sharks
Poison dart frogs
Ray bay touch tank
Lagoon under bridge
Water monitor, green
iguana, camians,
chameleons
Reptile Ruins
Bony skeleton
Operculum covering gills
Swim bladder to maintain
depth
Chondrichthyes Cartilage skeleton
Will sink when stop
swimming
Visible gill slits
Amphibia
Wet skin they use to breathe
tetrapods
external fertlization- moist
habitats
Reptilia
Scaly skin
Lay leathery eggs (amniotes)
Touch tank
In rocky shores tank and touch
tank
Shark tank
Reptile Ruins
Phyla
Class
Characteristics
Name of Animal
Location
Chordata
Aves
feathers
wings
Parrots
African Penguins
Upstairs
Outside exhibit
Mammalia
Mammary glands
Fur at some point
California Sea lions
Harbor seals, Grey Seal
River Otters
Back tank, outdoor arena
Tank in Front of Aquarium
Otter Falls outside
1. Observe the sting rays and the bamboo sharks located in the sting ray bay touch tank (to the left as you enter the aquarium). Describe
the differences in the body shapes of rays and sharks:
Sharks more streamlined, rays are dorsoventrally flattened (flattened back to belly)
2. a) Observe the fish under the bridge in sand shark lagoon. Find the dogfish size and describe its basic size and what it looks like.
About 3-4 ft long, gray in color
b) What Phylum and Class does this fish belong to?
Phylum Chordata, Class Chondrichthyes
3. Describe the mutualism between clownfish and sea anemones.
Clownfish get protection from the anemone because anemones can sting other fish but clownfish are immune to their sting. Anemone
gets some protection in return because clownfish chase away butterfly fish which would eat the anemone. Clownfish also acts as bait to
attract other fish to the anemone and then the anemone can eat them.
4. Observe the piranhas. Describe their behavior:
The piranhas are very still. They are able to hover at any depth due to the presence of a swim bladder which lets them adjust their
buoyancy. The is different that sharks which must swim to maintain their depth.
5. Observe the coral reef exhibit for at least 3 minutes. Make note of some of the behaviors and/or interactions of the fish and other
organisms in the exhibit.
You can see: fish schooling together, fish picking at the coral to eat any algae off the coral, small fish cleaning parasites off of
larger fish, etc
6. Name 5 species of fish that you were successfully able to identify in the coral reef exhibit (No cheating!!!) (using the descriptions at the
bottom of the tank) and describe their basic color pattern:
See slides of signs
7. What is the function of the eyespot on the spotfin butterflyfish in the Form and Function tank (or copperbanded butterflyfish, or raccoon
butterflyfish in coral reef exhibit, if not in the Form and Function tank)?
The eyespot tricks predators into thinking the tail is the head of the fish. They typically have a strip hiding their true eye. If a
predtor attackes the tail, it is much more likely that the prey fish will escape.
8. How can you distinguish a sea lion (in the back of the aquarium) from a seal (in the front of an aquarium)? Hint: use your powers of
observations, but you can also obtain this information by attending the sea lion show.
Seals have pin holes for ears, small front flippers and use their back flippers for propulsion. Sea lions have external ear flaps, large front
flippers that allow them to move around on land better, use their front flippers for propulsion, and have longer, flexible necks.
9. Find the egg cases of the sharks upstairs. These egg cases are deposited along the sea floor to develop outside of the mother’s body. Is
this a case of oviparity, ovoviviparity, or viviparity?
Oviparity
10. What is the common name of the octopus found at the aquarium? What is its scientific name?
Giant Pacific Octopus. Enteroctopus dofleini