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Wisdom Wednesday 9/11/2019

Shore Buddies Wisdom Wednesday

Golden Cuttlefish image from Instagram

Photo by @wsoo_photography

Cuttlefish are found all over the Ocean, but are totally absent from the Americas’ waters. They are mostly shallow-water animals, although they are known to go to depths of about 600 meters (2,000 feet). The average lifespan of a cuttlefish is about 1 to 2 years. Despite their name, cuttlefish are not fish but molluscs, and there are over 120 species of cuttlefish. Cuttlefish have eight arms and two tentacles. Both the tentacles and arms have suckers. They change color and pattern, and the shape or texture of the skin within one second. Cuttlefish have one of the largest brain-to-body size ratios of all invertebrates. Recent studies indicate cuttlefish are among the most intelligent invertebrates. Their blood is an unusual shade of green-blue because it uses the copper-containing protein haemocyanin to carry oxygen instead of the red, iron-containing protein haemoglobin found in humans’ blood.


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