superficially resemble starfish, they generally have five thin limbs
which readily break off when grabbed by a predator however they
promptly regenerate. This is where most of the similarities end.
The limbs are clearly set off from a disk shaped body. The vital
organs are confined within the body and not extended into the arms
as in the case of starfish. The suckerless tube feet are primarily
sense organs rather than for movement. Brittle-stars are primarily
are over 10 species found in Cornwall which are difficult to tell
apart. The majority are only know by their scientific name. The
most abundant is the common brittle star Ophiothrix fragilis. Brittle-stars
are found in deeper water in huge numbers but are still common in
the inter tidal zone under rocks.