Barnacles don't move once they settle down as a tiny larvae on their chosen surface. Limpets can move around on their broad foot. Some limpets have holes at the top of the hard shell, others do not. The hole is not closed by plates.
Wht is the difference between Lanthanides and Actinides?
Both larval and adult barnacles have a single eye - although it's probably more of a "light sensor" than what we think of as an "eye" since it pretty much is only capable of sensing the difference between light and dark/shadow. In the nauplius (larva) it's a spot on top of the the barnacle on the end that would be considered the head. In the adult, the eye is developed/derived from the naupliar eye. Since barnacles attach themselves by their heads (kinda by their forheads) to the surface they are stuck to, the vestigial eye/light-sensor would be on the side, down near where the barnacle has attached itsself to a surface.
what is the difference between 201 and 201K
bottlenose dolphin, barracuda, bristlenose catfish, barnacle
difference between hand drawings and digital art
I believe a barnacle is some kind of sea organism. A rock is, well, a rock.
Barnacles and Crabs are both Crustaceans, while limpets are Molluscs - so I would assume that a barnacle's DNA would be more similar to a crab's.
The relationship between a barnacle and a whale is commensalim.
Since crabs and barnacles belong to the same evolutionary lineage, one would expect their DNA to be more similar. However, convergent evolution could result in homoplasies that would cause a barnacle to have DNA more similar to that of a limpet than a crab.
barnacle
There is only one main difference between hermit crabs and barnacles. Hermit crabs have a hard exoskeleton that protects their bodies.
The barnacle gets free food and a free ride and the whale is not harmed by the barnacle but does not benefit ether from the relationship. therefore the relationship between the Grey Whale and the barnacle is a perfect example of commensalism.
The barnacle gets free food and a free ride and the whale is not harmed by the barnacle but does not benefit ether from the relationship. therefore the relationship between the Grey Whale and the barnacle is a perfect example of commensalism.
seaweed - limpet - crab - humans
Mutualism
It can. It depends what kind of limpet it is.
Mr Limpet is an undersea adventure