#marinelifefacts

[jkfishworld]

Tube worms, like this gorgeous feather duster, as sessile organisms. This means they attach themselves to whatever surface they’re on, and (unless removed by an external force), stay on that surface for the rest of their life!

[jimabernethy]

#Repost from the incredible conservationist... @barrelbag @download.ins --- The star of this week's #MarineLifeMonday, octopuses! Let's share some octopus facts: 1) The plural of octopus is octopuses, not octopi. 2) Octopuses have three hearts. Two of the hearts work exclusively to move blood beyond the animal’s gills, while the third keeps circulation flowing for the organs. 3) Octopus arms have a mind of their own. Two-thirds of an octopus’ neurons reside in its arms, not its head. As a result, the arms can problem solve how to open a shellfish while their owners are busy doing something else, like checking out a cave for more edible goodies. 4) Octopus ink doesn’t just hide the animal. The ink also physically harms enemies. 5) After mating, it’s game over for octopuses. Mating and parenthood are brief affairs for octopuses, who die shortly after. 6) Octopuses are really old. The oldest known octopus fossil belongs to an animal that lived some 296 million years ago, during the Carboniferous period 7) Octopuses have blue blood. To survive in the deep ocean, octopuses evolved a copper rather than iron-based blood called hemocyanin, which turns its blood blue. This copper base is more efficient at transporting oxygen than hemoglobin when the water temperature is very low and not much oxygen is around. #marinelifefacts #marineanimals #marinelife #oceanlife #echinoderms #oceanfacts #marineconservation #marinebiologyfacts #saveourseas #saveouoroceans #octopus #oceanconservation https://www.instagram.com/p/CKg2ZYNh6Q6/?igshid=1fbcosbeiy85d