Single knobs

Picture informations: Ball-shaped algae
Author(s)	Rainer Borcherding
Licence owner	Schutzstation Wattenmeer
Licence statement	Copyrighted Material; the copyright remains with the author (not this web publication)
Licence	cc-by-sa 3.0

Inflated algal spheres, greenish brown

Picture informations: Sea anemones
Author(s)	Wolf Wichmann
Licence owner	Wolf Wichmann
Licence statement	Copyrighted Material; the copyright remains with the author (not this web publication)
Licence	cc-by-sa 3.0

Retractable tentacle head, attached to hard substrate

Picture informations: Sea squirts
Author(s)	Rainer Borcherding
Licence owner	Schutzstation Wattenmeer
Licence statement	Copyrighted Material; the copyright remains with the author (not this web publication)
Licence	cc-by-sa 3.0

Globular or tubular, always 2 small openings

Picture informations: Sea slugs
Author(s)	Peter Jonas
Licence owner	Peter Jonas
Licence statement	Copyrighted Material; the copyright remains with the author (not this web publication)
Licence	cc-by-sa 3.0

2 or 4 short antennae, mobile organism with sucker foot

Picture informations: Dead mans finger
Author(s)	Peter Jonas
Licence owner	Peter Jonas
Licence statement	Copyrighted Material; the copyright remains with the author (not this web publication)
Licence	cc-by-sa 3.0

Dead mans finger

Picture informations: Slimy things
Author(s)	Rainer Borcherding
Licence owner	Schutzstation Wattenmeer
Licence statement	Copyrighted Material; the copyright remains with the author (not this web publication)
Licence	cc-by-sa 3.0

Jelly globules, clumps or strings, not sticky

Picture informations: Egg clumps
Author(s)	Rainer Borcherding
Licence owner	Schutzstation Wattenmeer
Licence statement	Copyrighted Material; the copyright remains with the author (not this web publication)
Licence	cc-by-sa 3.0

Many identical eggs, in clumps or groups

Picture informations: Group of lumps
Author(s)	Rainer Borcherding
Licence owner	Schutzstation Wattenmeer
Licence statement	Copyrighted Material; the copyright remains with the author (not this web publication)
Licence	cc-by-sa 3.0

Hard-shelled chalk knob on hard substrate