Octopuses
The octopus has a head-to-body ratio of approximately 1:2 with the tentacles somewhat longer than the mantle (large, bulbous, muscular feature resembling a head and located above the actual head, The suction cups are aligned along the housing major organs). underside of the tentacles. Drawing the tentacles toward the outside portrays the tentacles' characteristic wiggly, wriggly motion.
The pupil is horizontally oblong, making the octopus look sleepy.
The suction cups are regularly spaced in staggered rows.
When swimming, the octopus stretches itself, elongating the mantle.
Squid
The siphon is not a for food, nor is it located between the eyes. The octopus squirts water through the siphon to allow for jet propulsion. Siphon
The yariika's ("spear squid"; Loligo cylindrical body appears to have relatively the same thickness whether viewed from the front or side.
Big fin reef squid (Sepioteuthis lessoniana) shown swimming.
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Back
Before extending its tentacles, the big fin reef squid arcs its mantle
The entire body becomes ramrod stiff when the tentacles are extended.
The eyes are perfectly round and have an alert appearance.
Blowfish
The blowfish inflates to twice its normal size.
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The blowfish's body expands up to the pelvic fin.
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