Need to do a research paper...

[Matt]

Catherine, the description I found below looks like the show I almost saw... For added (almost) local colour, Dr. Mather is faculty at the University of Lethbridge. It was part of "The blue realm" series.

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“TENTACLES” follows Dr. Jennifer Mather as she leads a
team of renowned scientists to the beautiful Caribbean
island of Bonaire. Their mission is to prove a controversial
theory: reef squid speak to each other with a complex lan-
guage they paint on their skin.