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SQUID DISSECTION LAB PREP
What is a squid?
A marine mollusc from the class Cephalopoda
Slender, pointed body
Eight arms, two tentacles
A squid is…
There are over 300 species of squid Range from a few inches to over 100 feet
long
Squids
Live in the oceans of North America and Europe
Squids
Eat fish, jellyfish, crabs and shellfish
Squids
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
Squids
Have 3 hearts, one pumps blood, two are for gill functions
Squids
Are hunted by sharks, sperm whales, other sea creatures and humans
Squids
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
Squids
Lab Setup
1. Examine the outside of the squid
Locate the tentacles, head, mantle and fins
Squid Dissection
2. Locate the squid’s mouth. Describe where it is located, remove the
beak
Squid Dissection
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
Squid Dissection
4. Turn the squid over and lay it flat Carefully cut through the mantle only Lay the mantle open
Squid Dissection
Remove the silvery, black ink sac and put it aside for later
Squid Dissection
5. Using the squid diagram, locate the siphon, liver, stomach and gills
Squid Dissection
6. Locate the hard pen near the squid’s fin end
Grasp the pen and pull it out
Squid Dissection
7. Gently pierce the ink sac with the pen Write your name using the ink on a paper
towel
Squid Dissection
8. Make a small cut in the center of the eye Remove and examine the small, hard, round
lens
Squid Dissection
9. Clean and wipe down your work area
Squid Dissection
Lab Partners – F Period
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
Lab Partners – H Period
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
IF YOU MESS AROUND YOU WILL EARN A 0 ON
THIS ASSIGNMENT.NO JOKES.