Melluzis is a young male Grey Seal that was found stranded at Melluži beach, Jūrmala, on 19 April 2021 (hence his name). The experts of Nature Conservation Agency of Latvia brought the animal to Riga Zoo as it needed a medical help. After a successful treatment and rehabilitation, Melluzis together with Grīva, another rehabilitated Grey Seal pup, was released into the Gulf of Riga on 3 June 2021. Melluzis was equipped with a GPS transmitter, so we have a possibility to follow its movements.
Still no more signals received from Melluzis' GPS transmitter. We continue trying to solve the problem...
Somewhere between Sweden and Denmark
The last GPS signals show that Melluzis continues moving by the south coast of Sweden towards Zealand, the largest island of Denmark. This is another favourite area of Grey Seals in Baltic Sea (see the research results of Polish scientists).
Unfortunately on 21 July the receiving of GPS signals stopped. The death of the animal seems to be unlikely, since at the same time the data flow stopped both from Melluzis and the other of our seals, Grīva, from the opposite end of Baltic Sea near Ventspils, Latvia. We are trying to establish what causes this problem.
This week Melluzis continues a high-speed travel towards the southern part of Baltic Sea. Melluzis passes Gotland and Öland, Sweden, and moves further to Bornholm, Denmark. Melluzis has covered around 300 kilometres this week (including all turns). On Sunday Melluzis is close to the area Irbe now resides.
Between Gotland and Sweden
Melluzis now moves in the area between the coast of Sweden and Swedish island of Gotland. The temperature at the sea surface is around 20 ⁰C, and the sea is 60‒140 metres deep here.
|28 June‒4 July||
Melluzis continues his fast move, covering about 120 kilometres to the south. That's the distance in straight line, actual travel was of course much more. 57 GPS signals recorded.
The big trip continues
Melluzis keeps traveling fast. First he continues northeast and reaches numerous islets along the southern coast of Finland, then turns and moves towards Sweden, then turns again and heads south. 76 GPS signals were received this week.
Into the Big Sea
This week Melluzis leaves the Gulf of Riga. He passes Roja and Kolka, crosses the Irbe Strait and continues into Baltic Sea. Melluzis travels fast. That gives us a hope that he has already learned to hunt on fish. 52 GPS signals were recorded by satellite.
Melluzis passes by Melluži, Latvia
Melluzis goes round Ruhnu Island and returns to the south of the Gulf of Riga. On 12 June the GPS signal is received 10 kilometres from Melluži, Jūrmala, then continues northeast. This week 40 GPS signals were received in total. That means that the seal is active and healthy.
Towards Ruhnu, Estonia
The first days after release bring us a worry since no signals are received from the GPS transmitter Melluzis is wearing. The uncertainty is happily over when the first GPS signal arrives late at night on Friday, 4 June. Other signals follow, and we can be sure that Melluzis is all right and his GPS transmitter works well. The GPS data show that Melluzis is heading north, by the western coast of Estonian island of Ruhnu.
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