This video in about lumpsuckers and whelk eggs in the Oosterschelde estuary in the Netherlands.
Translated from the Dutch marine biologists of Stichting Anemoon:
Sunday, December 7th, 2014
The past few weeks recreational divers have reported the first observations of lumpsuckers and whelk egg capsules of this autumn. Experienced scuba divers then will know that winter has begun. It is the first of a series of observations on the salty nature calendar that are done annually in the last weeks of autumn or in the early weeks of the meteorological winter. A characteristic feature of these winter phenomena is that they are dealing with the propagation of species: reproduction in seawater becoming increasingly colder.
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