The waters around Piran were pretty noisy today. These are the sounds of 35-40 dolphins, including males, females and calves, recorded by Morigenos research team using a hydrophone (underwater microphone).

The Gulf of Trieste, including the waters of Slovenia, is home to a resident population of about 150 bottlenose dolphins (Tursiops truncatus). Dolphins use these waters to feed, reproduce and raise their young. This population has been studied by Morigenos researchers for 18 years, so we know most of these dolphins well. Individual animals are identified by natural markings on their dorsal fin. Each identified dolphin is given a name and included in the identification catalogue. Some of the dolphins sighted today were first encountered back in 2003.

Dolphins communicate, navigate and locate their prey using sound, so we can learn a lot about them by studying these sounds. Their vocalisations include various forms of whistles, clicks and buzzing sounds. Each dolphin also has its own “signature whistle”, which represents its “name”. Dolphins can recognise each other based on these whistles and, by detailed analysis of these sounds, so can we.

We are extremely grateful to everyone that reported their sightings to us during these last few days. By doing this, you are helping us collect important information about the movements, behaviour and conservation status of these animals. If you spot dolphins in the Gulf of Trieste, please give us a call at +38631771077.

You can also support our work by adopting one of these dolphins.