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⬅ #27 red king crab #28 acorn barnacleNH-Icon-acornbarnacle #29 spider crab ➡

The acorn barnacle is a benthic animal found at the bottom of the ocean in New Leaf and New Horizons. It has a tiny, stationary, circular shadow. Diving is the only way to catch it.

Donating to the museum

In New Leaf

In New Leaf, an information board in the aquarium will list information about this creature.

"They attach to hard places, and though they looks like bivalves, they are related to shrimp and crab. Some species are even edible and have a very crab-like taste to them, making it a fine delicacy. Young acorn barnacles come from eggs, do not have shells, and float around the ocean like shrimp. They gradually develop their shells as they grow into the image we usually see."

In New Horizons

Upon donation or selecting "Tell me more about this!", Blathers the curator will say:

"Do not mistake the acorn barnacle for a relative of the calm. Tut-tut, mollusks they are not. Barnacles are cousins to crabs and lobsters, you see. Though the family resemblance is hard to spot. Acorn barnacles may also seem to live a stationary life, what with being attached to rocks and such. But truth be told, baby barnacles are avid travelers, drifting shell-less about the sea before settling down. Once they find a good rock to affix themselves to, they float free no more. Which begs the question... Do adult acorn barnacles ever look out across the open sea...and long for youthful adventure once more?"

Capture Quotes

"I got an acorn barnacle! Maybe I can grow a barnacle tree?" —New Leaf
"I got an acorn barnacle! Will it grow into an oak barnacle?" —New Horizons

Encyclopedia Information

New Leaf

Deep-Sea Creature
Encyclopedia Information
Acorn barnacle
"I got an acorn barnacle! Maybe I can grow a barnacle tree?"
Size 1 inch
Time All day
Season All year


New Horizons

Deep-Sea Creature
Encyclopedia Information
2020070222361300-02CB906EA538A35643C1E1484C4B947D
"I got an acorn barnacle! Will it grow into an oak barnacle?"
Current Active Hours All day
Months active (north) All year
Months active (south) All year


Gallery

Further Information

Main article: Barnacle on Wikipedia

Free-living barnacles are attached to the substratum by cement glands that form the base of the first pair of antennae; in effect, the animal is fixed upside down by means of its forehead. Barnacles have two distinct larval stages before developing into a mature adult. Typical acorn barnacles develop six hard calcareous plates to surround and protect their bodies. For the rest of their lives, they are cemented to the substrate, using their feathery legs to capture plankton.


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