Although Barnacles can be found in a wide array of environments, they seem to prefer damp areas. If the Barnacle is killed, the cilia/setae are permanently deactivated also, which is why dead Barnacle tongues are not sticky.īarnacles attach themselves to ceilings or the undersides of overhangs, from which they lower their sticky tongues. By this model, when potential prey comes in contact with the tongue, the Barnacle feels it and directs the cilia/setae to activate into their adhesive form, and conversely to deactivate into their normal relaxed form if the prey turns out to be unsuitable. The ability to turn their tongue's stickiness on and off at will suggests that the Barnacle tongue adhesive is actually formed by cilia or setae (tiny hairs or bristles, as on a gecko's foot) rather than a sticky chemical. Upon attempting to consume these items, the Barnacle will find them unpalatable and release them.

On its tongue is a very strong natural adhesive (such as cilia/setae) that can bond to whatever it comes in contact with.īarnacles cannot differentiate between living and inorganic items that become stuck to their tongues, and can be tricked into hauling in barrels, pallets and other debris commonly found in their vicinity. The Barnacle uses its 'tongue' to snare and lift prey items the appendage is strong enough to support the weight of an adult human. A Barnacle is little more than a large mouth full of two rows of sharp teeth, with a long string-like appendage dangling out of its maw.

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