Reefs
Sharks
Mammals
Water
Fish
100
Some people think coral are plants, but they are actually this type of organism.
What are animals?
100
Shark skeletons are made mostly of this.
What is cartilage?
100
On seals these are internal, on sea lions these are external.
What are ears?
100
Water has one, and it is H2O.
What is the chemical formula for water?
100
Fish are grouped into these three basic categories.
What are cartilaginous, jawless, and bony?
200
These common reef organisms don't wear pants in real life.
What are sponges?
200
Sharks lose and replace these continually throughout their lives.
What are teeth?
200
Dolphins, whales, and porpoises are classified as this type of animal.
What are cetaceans?
200
It is defined as the amount of dissolved solids found in water.
What is salinity?
200
All fish are vertebrates with these two anatomical traits.
What are fins and gills?
300
Coral reefs are made from this substance, which is secreted by corals.
What is calcium carbonate?
300
Every shark has one of these, and it does not attach to its cranium.
What is a jaw?
300
Seals, sea lions, and walruses are classified as this type of animal.
What are pinnipeds?
300
Water is an ideal universal solvent because of this trait.
What is polarity?
300
Most fish fall into this category.
What is bony?
400
An individual coral is known as this.
What is a polyp?
400
This system of pores allows sharks to detect changes in water density.
What is the lateral line system?
400
The largest of the pinnipeds.
What are walruses?
400
Water has a high capacity for this.
What is heat?
400
The name for the scientific study of fish.
What is ichthyology?
500
Many reef fish have evolved this body shape, for maximum maneuverability.
What is laterally compressed?
500
These jelly-filled pores allow sharks to detect electrical impulses.
What are ampullae of Lorenzini?
500
The largest whales have baleen instead of these.
What are teeth?
500
This quality of water is necessary for maintaining the structure of DNA.
What is hydrogen bonding?
500
Chromatophores allow a fish to change this about itself.
What is color?
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