Show navigation
Hide navigation
Home
Determination
Observations
Report now
My observations
My pictures
User list
Record check
Score system
All observations
Species
Knowledge
Marine nature
Threats
Marine protection
Beachcombing
Service
Apps
About BeachExplorer
Quality check
News
Partners
Educational material
FAQ & help
Press
Statistics
Login
Login
Unknown mystery
|
Technical terms
|
Help & business terms
Chalk tubes
Spiral tubeworms
Picture informations: Spiral tubeworms
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
Small curled tubes on algae, stones or crabs
×
Chalk tubes, slightly curved
Picture informations: Chalk tubes, slightly curved
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
Slightly bent tube, often tapering towards the end
×
Twisted chalk tubes
Picture informations: Twisted chalk tubes
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
Erratically wound tubes, diameter constant or increasing
×
Shipworms
Picture informations: Shipworms
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
Shipworms
×