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imbicating should read imbricating
caitulum should read capitulum.
Is this one of the creatures known as goose, or goose-necked barnacles? I asked I-spot for suggestion of scientific name....I'm not a scientist or expert, just enjoy seeing interesting things! Haven't a clue what all the technical references are, I'm afraid, but thanks for the comments anyway.
Sorry about the technical language but I was quoting directly from Southwards key.
Peduncle is the stem.
Capitulum is the head.
According to my dictionary, imbricating means "Having regularly arranged, overlapping edges, as roof tiles or fish scales"
This is a goose barnacle. Never sure where the term "goose-necked" came from. Even if I could ID the species beyond genus I'm afraid this is one of many animals that don't have a common name.
"Goose barnacle" comes from the days before there was a knowledge of bird migration and it was believed that the geese we know as Barnacle Geese overwintered as these stalked barnacles.
Lat/Lng: 57.2059, -6.0105
OS grid ref: NG578199
Growing on plastic barrel recently washed up on shore