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Pen: feather-shaped internal structure that supports the squid’s mantle and stabilizes the squid for swimming
Ink: pigment melanin which artists refer to as “sepia ink”
• Octopi = black ink
• Squid = blue-black ink
• Cuttlefish = brown ink
Arms vs. Tentacles
• Arms: short, rip apart prey and stuff it into the mouth
• Tentacles: long and have suckers on the end shoot out to capture prey
Male or Female? • Females: – Eggs = yellow in color– Nidamental glands: large, oval white organs in the
middle of the cavity
Virtual Dissection
• http://www.biologycorner.com/worksheets/squid_virtual.html#.Uwya-3ddV7E
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