1. Feel the Water Know blue color
ANIM S IN T E W E
AL
H
AT R
Pavel Smetanov
Riga Ostvald school
Form 6 d

2. Content
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Underwater World
Sea Urchins
Red Sea Urchins, British Columbia
Sea Urchins, British Columbia
Fire Urchin, Indonesia
Sea Urchin, Bonaire Island
Sea Urchin, Channel Islands
Green Sea Urchins, Alaska
Fire Urchin, Papua New Guinea
Our sea urchin
Conclusion

3. Underwater World
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Underwater World is
extremely variable.
Scientists discover new
and new species of
marine fish and
animals continuously.
There are over 30 000
species of fish and a lot
of mollusks and crustaceans dwell on Earth.

4. Sea Urchins
The sea urchins is one of the
most beautiful marine animals.
Sea urchins are small, spiny,
globular animals. There are about
950 species of sea urchins inhabit
all oceans from the intertidal wave
to 5000 meters deep.
The sea urchins, those are so
visually arresting, dangerous for
swimmers and sometimes
delicious for special cultures,
bring new discoveries to their
researchers.

5. Red Sea Urchins, British Columbia
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Red sea urchins carpet
a kelp forest off British
Columbia. The marine
invertebrates are
important links in the
marine food chain.
Fish pick at the
urchins, which feed on
bits of algae.

6. Sea Urchins, British Columbia
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A nontoxic dye
highlights water
currents surrounding
sea urchins off
Vancouver Island,
British Columbia.
These small, spiny
echinoderms are found
in oceans all over the
world.

7. Fire Urchin, Indonesia
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The spines of a fire
urchin form a
multicolored flower off
Komodo Island,
Indonesia. The blue
swellings on the tip of
each spine are filled
with venom.

8. Sea Urchin, Bonaire Island
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A sea urchin is nestled
in a coral formation off
Bonaire Island.
Urchins feed on algae
and invertebrates - a
recent study found that
the sound of their teeth
scraping on reefs can
cause a rise in ocean
noise.

9. Sea Urchin, Channel Islands
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Sea urchins brandish
their spines on the
seafloor near the
Channel Islands.
Scientists recently
discovered that the
eyeless invertebrates
“see” by detecting light
with their spines.

10. Green Sea Urchins, Alaska
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Green sea urchins,
chitons, and sea stars
cluster in a tidal pool
off Alaska’s Aleutian
Islands. Sea urchins
and sea stars are close
relatives.

11. Fire Urchin, Papua New Guinea
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The bright red color of
a fire urchin warns
predators that its spines
are poisonous. Sea
otters are the major
predators of sea
urchins.

12. Our sea urchin
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We found this sea
urchin on the Atlantic
seaboard of Tenerife
island.

13. ●
We should take a good
care of environment to
provide the survival of
such beautiful animals.

14. T ANK YOU F
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OR YOUR
AT E ION
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