Squid Dissection Prelab

1. LAB PREP

3.  A marine mollusc
from the class
Cephalopoda
 Slender, pointed body
 Eight arms, two
tentacles

4.  There are over 300 species of squid
 Range from a few inches to over 100 feet
long

5.  Live in the oceans of North America and
Europe

6.  Eat fish, jellyfish, crabs and shellfish

7.  Move by sucking water in through the funnel
in their head (called the siphon) and shoot it
back out through the mantle
 They move backward
 Travel at about 20 mph

8.  Have 3 hearts, one pumps blood, two are for
gill functions

9.  Are hunted by sharks, sperm whales, other
sea creatures and humans

10.  Defend themselves by expelling ink
 They have an ink sac that contains the ink,
the ink sac is connected to the pen (which
also acts as a backbone-like structure), which
expels the ink

12.  1. Examine the outside of
the squid
 Locate the tentacles, head,
mantle and fins

13.  2. Locate the squid’s mouth.
 Describe where it is located, remove the beak

14.  3. Go through the mouth and grasp the brain
and the long nerve attached to it
 Carefully remove and examine it
 Describe what it looks like

15.  4. Turn the squid over and lay it flat
 Carefully cut through the mantle only
 Lay the mantle open

16.  Remove the silvery, black ink sac and put it
aside for later

17.  5. Using the squid diagram, locate the
siphon, liver, stomach and gills

18.  6. Locate the hard pen near the squid’s fin
end
 Grasp the pen and pull it out

19.  7. Gently pierce the ink sac with the pen
 Write your name using the ink on a paper
towel

20.  8. Make a small cut in the center of the eye
 Remove and examine the small, hard, round
lens

21.  9. Clean and wipe down your work area

23. These are your partners,
there are
NO NEGOTIATIONS
 Caroline & Erin
 Atem & Josh
 Brianna C & Briana M.
 Brian & Brendan
 Taylor & Ryan V
 Julie & Katelynn &
Harley
 Chris & Tim
 Ryan G & Evan
 Natasha & Aidrianna
 Nick & Chadd
 Thaddeus & Damien

24. These are your partners,
there are
NO NEGOTIATIONS
 Abby & Lizzie
 Alyssa & Sarah
 Panda & Beres
 Deegan & Kamil
 Jarred & Evan
 Hannah & Brooke
 Melissa & Lindsey
 Carolyn & Katie
 G$ & Greg
 Emma & Bri
 Joey & Spencer