This document provides instructions for a lab involving the dissection and examination of a squid. It begins with background information on squid, noting that they are cephalopods ranging in size from a few inches to over 100 feet long. It then lists 9 steps for the lab, including examining the external features of the squid, locating and examining the brain, ink sac, eyes, and internal organs like the siphon, liver, and gills. The document concludes by assigning lab partners.

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