Dolphins in the Gulf of Gdansk. For the first time since the nineteenth century! – Gazeta.pl

The first information about the “jumping porpoise” in the area of ​​Hel Marine Station of experts from the Institute of Oceanography at the University of Gdansk received on August 8. Information, unfortunately, not documented, but its findings to any photo.

last time in the nineteenth century.

“We adopted this information from routine reserve, but waiting for proof of authentication, eg. in the form of repeated similar report, as usual, as podpowiadało our experience, observation of such a group of cetaceans is sometimes multiplied “- informs on its website Marine Station of the Institute of Oceanography at the University of Gdansk.

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Another message about dolphins came after a few days, but the second – the eastern shore of the Gulf of Gdansk. Observations made on August 12 zander anglers. Polish scientists sent by Dr. Alexey Gushchin of Kaliningrad. The same two dolphins sighted on August 14 in the vicinity of Klaipeda. The information that they are bottlenose dolphins, confirmed the researchers at the Lithuanian Sea Museum. Earlier, in late July and early August, a pair butlonosów of the subspecies Tursiops truncatus was observed off the east coast of Denmark.

Is the appearance of them on the Polish coast means the exploration of new reservoirs?

– Dolphins are like people and are constantly looking for new avenues to explore, traveled here under his stimulus, probably food. The ecosystem of the Baltic Sea is, however, very young – it has only 30 thousand. years and so far the only species of whale that settled here was porpoise seven thousand years ago – explains Professor. Christopher Leather, head of IOUG Marine Station in Hel. – Perhaps 20 thousand. years will find other cetaceans, although it is not stated that it will be just bottlenose dolphins, but for example. the white dolphins, which often appear in the Baltic Sea. The mere appearance of a dolphin does not mean, of course, that this is their habitat, it’s a bit as if we said that man inhabits Mount Everest, because it appears there.

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The threat of gillnets

Bottlenose dolphins are among the most common and widely dispersed species of dolphins. They live in groups of usually approx. 10 individuals – the coast – up to 25 on the ocean. There are also single individuals, but the herds of several hundred members, eg. In the tropical Pacific region. Just like porpoises are protected by the provisions of the EU Habitats Directive and the Bonn Convention and its agreements ASCOBANS. The greatest threat to their lives are gill nets and underwater noise.

The last time bottlenose dolphins in the area of ​​our coast were recorded in the late nineteenth century.