S. balanoides

More about the Northern rock barnacle

Kicks food into its mouth

<A HREF="">&#91;Watch barnacles eat!&#93;</A>

Cross section of a barnacle that has been drawn partly after originals from several books.
It is sometimes said that barnacles kick their food into their mouths. This is true to a certain extent because they lie on their backs in their calcareous shells, and stick their brush furnished legs (cirria)out of the shell to catch food in the water. Their diet can consist of small millimetre large copepods, but even microscopic algae. If the currents are favourable their shell is flushed with fresh water automatically and the cirria can be used to catch food, otherwise they have to wave with their cirria to pump the water through the shell. It can be fascinating to watch the barnacle as it twists and turns its cirria to obtain the best position when the currents change direction.

Page 1 of 7

Next page

Kicks in its food

White belts

Long penis

No regret

Can holds its breath

The dogwhelk kills


Other species

Northern rock barnacle    More facts     Other names
Home    Contents    Inspiration    Facts    Collaboration   
© Aquascope 2000   Tjärnö Marine Biological Laboratory, Strömstad, Sweden
Bo Johannesson | Martin Larsvik | Lars-Ove Loo | Helena Samuelsson