‚Infauna‘ includes all animals living in the sea bottom (sediment). Our division is mainly interested in marine habitats which also include brackish coastal waters or river outlets.
We focus on the macrozoobenthos, small invertebrates hold back by a mesh larger than 0.5 mm in diameter. Typical representative are for example various worm-like creature like bristle worms (polychaetes) or ribbon worms (nemertines), molluscs (e.g. gastropods or bivalves), crustaceans (e.g. amphipods or crabs), and echinoderms (e.g. sea stars or sea urchins).
The standard devices for the collection of infauna are various grabs. They are used for the extraction of defined amounts of bottom sediment. Organisms are usually separated from the sediment by sieving and retained for further studies.