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.