Rob Dekker made the video.
Sunday, October 26, 2014
A new marine worm species, new for the Netherlands, has recently been discovered. Recreational divers found Cirriformia tentaculata in the central Oosterschelde estuary, and published their findings in ‘Het Zeepaardje’, the bimonthly magazine of the Strandwerkgemeenschap. It is not known whether the species has only just appeared on the Dutch coast, or that it had already been present for a long time but had never been discovered before because of its unobtrusive way of life.
Much sea life is hardly visible to the eyes of sport divers. At least 300 species of worms are known from our coastal waters. Many species live hidden in the sand and mud bottoms.
So, probably many worm species in the Netherlands have not been discovered yet.
The origin of annelids: here.
This video from the USA is called Tiny Nudibranchs of Southern California.
Sunday, October 12, 2014
This summer sport divers in the Oosterschelde estuary encountered a new and thus the 58th Dutch sea slug species. This was Aeolidiella sanguinea, for which we propose here as its Dutch name “Verborgen vlokslak” [hidden aeolid nudibranch]. The Dutch name comes from the fact that during the day this slug is inactive, hiding under stones and large shells and is only active at night. As a result, the animals are very difficult to observe for sport divers. This species is identified by the combination of a number of anatomical features and especially the shape of the egg strands.
This video is called Harbour Porpoise Species Identification.
Tuesday, September 30th, 2014
Around half past ten in the morning thirty volunteers departed aboard eight ships in line to the eastern part of the Oosterschelde. Nowhere else in the world the number of porpoises is counted in this way. During the scan, there was not much wind, so the animals were easy to find. A total of 34 porpoises were observed, including at least three mother and calf pairs.
Harbour porpoises in Belgium: here.
Sunday, September 28th, 2014
The Aeolidiella alderi sea slug was found on the Dutch coast for the first time in the late autumn of 2012. Since then, it was a rare slug. Only a small number of individuals in the westernmost Oosterschelde estuary were recorded. Very recently, more than one slug was found in the central Oosterschelde near Zierikzee with egg capsules and a single individual near Goes. So, the area where these beautiful sea slug has settled has extended considerably, and it seems the species is reproducing successfully in the Zeeland Delta.
Aeolidiella alderi is a not common slug species on the western European coast. It is known from a limited number of places around the British Isles and at the French coast to the Mediterranean.
This photo shows the rare reddish mushroom Crepidotus cinnabarinus between not so rare white Crepidotus mollis fungi; photo by Ieko Staal.
That species had never been seen in the Netherlands. Until 28 August 2014, in the Hulkesteinse bos woodland in Flevoland province. Six days, later on 3 September, it was found in Zeeland province as well.
This is a video about an oriental pratincole.
This bird species had only been seen once in the Netherlands before.
Here is a Dutch blog post about this.
According to Dutch Birding, this is a young female.