Sperm whales

Sperm whales in the northern and central Aegean, as we keep up the continuous research in the Greek seas

For several years now, we recognize one of the two sperm whales in the photo from the big part missing from its tail. The sperm whale is the largest toothed whale in the world, with females measuring 8 – 12 meters and males 16 – 18 meters and weighing 24 and 57 tons respectively. It
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Sea turtles of the Aegean Sea

The Aegean Sea welcomes three of the seven species of marine turtles that are found worldwide, namely the loggerhead turtle (Caretta caretta), the green turtle (Chelonia mydas) and the leatherback turtle (Dermochelys coriacea). The leatherback’s characteristic shell makes it easily recognisable, whereas the green turtle and loggerhead turtle are more difficult to distinguish.   The

Marine Mammal Behaviour Research

  The rapid decline of several marine mammal species such as dolphins and whales is a growing problem on a global scale. Losses in abundance have been especially important in the Mediterranean, a biodiversity hotspot which supports a diverse range of marine ecosystems. Marine mammals are threatened by various human activities and their effects, such

Research Expeditions over the Ikaria Trench 

During the research expeditions over the Ikaria Trench, the Archipelagos’ marine mammal team aim to gather data on the species living over this important hotspot, to increase our knowledge on their behaviour, distribution and density. Weather-allowing, boat surveys extend to  further areas during multiple-day research expeditions.  The surveys usually occur between the islands of Ikaria,

Photo Identification – An invaluable tool in cetacean research

Photo identification (Photo ID) is a method used within marine mammal research to identify individuals based on photographs. The identification of dolphins is done via the characteristics of their dorsal fins because these are as unique to each dolphin as fingerprints are to humans. The characteristics found on dorsal fins include scars, notches and variable

Great Data from 11 Boat surveys in 15 days by the Archipelagos’ Marine Mammal Research Team

We have recently had the opportunity to reopen our base on the Northern Aegean Island of Samos, which has been closed since the start of the Covid-19 pandemic. This is an exciting change of pace for Archipelagos, as this marine region is a hotspot for many species of cetaceans, creating unequalled opportunities for boat surveys

Bioacoustic Research – Understanding Underwater Sounds

Bioacoustics is a field in biology that studies the way that sound is produced, dispersed and received by animals. Marine mammals are highly reliant on acoustics, due to the low reliability of other available senses, especially sight, in underwater environments. Furthermore, sound travels nearly five times faster in seawater than in air.    Dolphin acoustics

Monitoring Seabird Populations

Besides studying marine mammals and turtles, Archipelagos’ marine mammal team also collects data on the seabirds spotted during boat surveys. The number of individuals, species, and location of encountered seabirds is recorded by dedicated observers. In 2021 only, our team has already recorded more than 3000 sightings! The most common species include the Mediterranean shearwater,

Assessing the Biodiversity of Zooplankton in the Aegean Sea

My name is Lisa and I am studying Coastal and Marine management at Van Hall Larenstein University of Applied Sciences in the Netherlands. I joined the Marine Mammal team of Archipelagos on Lipsi Island for a 3-month internship. I have been given the opportunity to start a new project, which was a comparative study between

Remote Internship – a photo-identification study of the short-beaked common dolphin, Delphinus delphis

I study Animal Sciences at the University of Hawaii at Manoa in the United States. When I first started my remote internship, I thought it would be like learning like I am at the university. I was extremely wrong where I had the freedom and flexibility to customize my remote internship – how I learn,