While common octopuses are not found this far north, we do have several native cephalopods in the waters off Nova Scotia. And yes, the plural of octopus is octopuses! The origin of the word octopus is Greek, not Latin.
Octopuses = Greek
Octopi = Latin

Print of watercolour, ink, and digital original.

All items are printed on archival-quality, 100lb, matte white paper. Greeting cards come with plain, white envelope.