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The triggerfish has developed a technique for overcoming the sea urchin's
defensive spines. Triggerfish are named for the dorsal spine which they erect for
protection after entering reef crevices. Their large mouths allow them to feed on a
The shrimpfish hides within the spines of the long-spined black urchin. The black
stripe down its own body matches those of the urchin. Small prey can be caught
from this safe vantage point. In a similar manner, the trumpetfish can hide inside ...
Like the sea cucumber, the sea urchin uses its tube feet to attach to rock surfaces
in the tide pools. Protected by its battery of spines, this echinoderm moves about
slowly feeding on algae and small invertebrates. In some areas sea urchins ...
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I purchased all three books in this set and taught a short course to a small group of high school kids. We had a great time with this course! We did 10 experiments and held very intense all-day ... Read full review