Two bottlenose dolphins surprised Copenhagen residents Monday afternoon when they were spotted swimming freely through the city’s busy harbor — a rare and exciting sight for marine experts.
Rare visitors in Copenhagen Harbor
For a few moments on Monday, people around Copenhagen’s Sydhavn stopped what they were doing and reached for their phones. In the glistening winter water, two sleek gray shapes appeared. It soon became clear that they were dolphins — right in the middle of the capital.
Three marine biologists from the Øresund Aquarium and a whale expert from the Natural History Museum have confirmed that the animals were bottlenose dolphins, a species that occasionally visits Danish waters but is rarely seen this far inside Copenhagen Harbor.
According to the experts, most marine life tends to avoid the heavier boat traffic in central canals. Because of that, their appearance here was unexpected.
Experts identify the species
Based on the shape of their dorsal fins — sharper and more defined than that of porpoises — the scientists concluded that these were indeed dolphins and not another small cetacean. The identification is about 99 percent certain. Only very close images of the fins could confirm it completely.
A video shared by TV 2 Kosmopol shows the two dolphins swimming in wide circles in the canal near Teglholmen, just outside residential apartments and office buildings. Despite the startling location, there is no danger to the animals since the water here is deep and calm enough for them to navigate.
Why they showed up in the city
Marine biologists believe that the dolphins likely followed a large school of herring or mackerel into the harbor. They feed mainly on these fish species, which are plentiful in Danish coastal waters during winter.
Even though bottlenose dolphins have been seen before in ports such as Helsingør and near Fyn, it is still an unusual event to spot them among tall buildings and bridges in central Copenhagen. Normally they stick to quieter coastal zones like Skagen or Frederikshavn, where the marine environment is closer to their natural habitat.
Could they be Denmark’s “famous dolphins”?
Some marine observers even believe these could be two well-known individuals that have visited Denmark before. One, “Delle,” gained public attention along the coast at Svendborgsund, while another, “Skywalker,” became famous around Aarhus Bay.
The distinctive patterns and scars on a dolphin’s dorsal fin serve as a natural ID tag, allowing researchers to track them over time. If more detailed videos are captured in Copenhagen, biologists might confirm whether it really is Delle and Skywalker paying a visit to the capital.
Interestingly, both of these dolphins were previously spotted interacting with boats, showing playful behavior toward people watching from piers. If this is indeed the same pair, experts expect them to remain in the harbor for a few days before heading toward open sea again.
A growing number of marine sightings
Denmark’s cleaner coastal waters have led to more frequent visits by seals, porpoises, and now dolphins. While they remain a rare sight in dense urban areas, improving water quality and healthy fish stocks may explain why encounters like this are becoming possible.
Meanwhile, Copenhagen’s marine biologists continue monitoring the area to ensure the animals stay safe. For now, the city has gained a temporary and fascinating pair of visitors that few will forget.
Sources and References
The Danish Dream: Frederikshavn – Maritime Heritage Meets Coastal Beauty
The Danish Dream: Best Taxi Companies in Denmark for Foreigners
TV2: Delfiner svømmer i Københavns Havn – et usædvanligt syn
