(4-5 known specie in Sweden)
Distribution in scandinavian waters
Maximum length: Boring sponges can only be as large as the shell
they live in.
Golden yellow to greenish in colour. The parts of the
sponge that stick out of the holes are fluffy. They feel
soft and slightly glossy.
Depth: Living examples can be found from about 3m and
deeper. Old bored examples can be found along the
Environment: Boring sponges live in lime (calcium) rich objects
where they chemically bore passages and cavities. The calcareous object
can be almost hollow. Fast-growing specie can build a covering lump
around the whole of the original calcareous object. Boring sponges are
often found on old, thick shells from i.e. whelks or as pictured above,
Misc: Boring sponges are important because they enable calcium
that is bonded in solid form, i.e. shells, to be transformed into a
solution (liquid form) and reused to build new constructions.
The picture above shows keel
Classification: Boring sponges belong to the silica
sponges under the group sponges (porifera).
© Aquascope 2000 Tjärnö Marine Biological
Laboratory, Strömstad, Sweden
| Martin Larsvik
Loo | Helena