The coastline of the southern Spanish province of Almería continues to surprise even experienced marine biologists. In the waters of the western Mediterranean, increasingly large and sometimes rare marine species have been observed in recent years – ranging from majestic migratory fish to rare shark species.
Spain Expat Press Editorial Team
by Marlon Gallego Bosbach
A unique marine corridor
Off the coast of Almería, different ocean currents converge. The region lies in the so-called Mar de Alborán, a transitional zone between the Atlantic and the Mediterranean. This unique location turns the coastal waters into a kind of “highway” for migrating marine life.
Warm temperatures, nutrient-rich currents, and the geographical location ensure that large fish species regularly gather here or pass through on their way between oceans.
From sunfish to tuna: impressive biodiversity
Among the most remarkable inhabitants are the so-called “gentle giants” such as the ocean sunfish (Mola mola), which, at up to three metres in length and weighing several hundred kilograms, is one of the heaviest bony fish in the world. Sightings of this unusually shaped marine creature are not uncommon off the coast of Almería.
Also regularly present in the region is the Atlantic bluefin tuna, one of the most important migratory fish in the Mediterranean. It passes through these waters especially during the warmer months on its long routes between the Atlantic and the Mediterranean.
The swordfish, a fast and powerful predator, is also regularly sighted in the region and is one of the characteristic species of the open sea off Almería.
Rare encounters with marine giants
Alongside the well-known species, it is the occasional sightings of larger and rarer animals that attract particular attention. These include the basking shark, the second-largest fish in the world, which is completely harmless and feeds on plankton.
The great white shark has also been recorded on rare occasions in the western Mediterranean – an extremely uncommon but documented phenomenon, although it does not indicate regular presence.
Why the giants gather here
Experts attribute the concentration of large marine species to several factors. The combination of warm water masses, deep-sea zones, and high biological productivity creates ideal conditions for migratory species.
In addition, Almería is located at an important biological crossroads where different ecosystems overlap. Atlantic, Mediterranean, and warm-water species all converge here, making the region particularly rich in biodiversity.
Greater visibility through technology and tourism
The increasing sightings do not necessarily mean that there are more large fish today than in the past. Instead, modern observation techniques, increased boat traffic, and documentation by divers and social media play an important role.
As a result, encounters that were rarely recorded in the past are now documented and shared much more frequently.
A fascinating natural phenomenon
The coastline of Almería vividly demonstrates how dynamic the Mediterranean can be. The region is not a permanent home for these giant marine creatures, but rather an important migratory corridor.
Whether sunfish, tuna, or the occasional shark – the waters off Almería remain a fascinating habitat that continues to deliver surprises and highlights the unique diversity of the Mediterranean.
