What organism uses the tides, specifically high spring tides, to time their breeding behaviors?
a. Fiddle crabs
b. Grunion
c. Hantzchia
d. Sand crabs
ANS: B
The grunion come in just after the highest spring tides to deposit and fertilize eggs. This provides
protection to the eggs from marine predators while they develop. Information can be found in the
section Tidal Patterns Can Affect Marine Organisms
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