Beachcombers Field Guide - Department Of Fisheries Western ...

The piles of algae and seagrasses
found on the beach are known as sea
wrack. The sea wrack is an assortment
of seagrasses, algae, shells, and the
remains of animals such as sponges
and sea urchins. This detritus (dead
and decaying material) provides a prime
feeding place for swarms of amphipods,
insects, larvae and other fauna. These
tiny creatures play a large role in
breaking down organic matter and
recycling nutrients – and are an
important food source for
fi sh and birds.
Sea wrack