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thegrandimago · 2 years

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Taken the same day as the previous post, this is a phosphorescent sea pen (Pennatula phosphorea), or röd fjäderpenna, found in the fjord. It clearly wasn't in it's preferred living situation where the basal peduncle is buried in soft sediment while the branches filter for food. I was unable to see the bioluminescence this species exhibits, but I was able to feel is that the sea pen's fleshy mass is supported by an internal rod made of calcium carbonate. #animal #animals #djur #wildlife #natur #naturliv #nature #invertebrate #invertebrates #octocoral #fauna #sjöpenna #sjöpennor #seapen #seapens #nässeldjur #cnidarian #cnidarians #animalia #cnidaria #anthozoa #octocorallia #pennatulacea #pennatulidae #pennatula #pennatulaphosphorea #phosphorescentseapen #rödfjäderpenna (at Klubbans biologiska station) https://www.instagram.com/p/CeHJFPpKisO/?igshid=NGJjMDIxMWI=

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thegrandimago · 2 years

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Taken 2022 22nd January, these are phosphorescent sea pen (Pennatula phosphorea), or röd fjäderpenna, @evolutionsmuseet being displayed. In Sweden, they occur on the west coast. This species lives in sandy and muddy substrates at 10-100m depths positioned within currents to feed on plankton. As their species name implies, they are one of several species in their genus to exhibit bioluminescence. #animal #animals #djur #wildlife #natur #naturliv #nature #naturalhistory #naturhistoriska #preservedspecimen #fauna #sjöpenna #sjöpennor #seapen #seapens #nässeldjur #cnidarian #cnidarians #animalia #cnidaria #anthozoa #octocorallia #pennatulacea #pennatulidae #pennatula #pennatulaphosphorea #phosphorescentseapen #rödfjäderpenna (at Evolutionsmuseet) https://www.instagram.com/p/CZaEpX7PC4o/?utm_medium=tumblr

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