In the Adriatic Sea near the town of Pulj, a rare and poorly known species of sea turtle has been spotted, capturing the attention of local divers and marine enthusiasts. The creature, identified as Aetomylaeus bovinus, commonly known as the leatherback sea turtle, was filmed swimming near the Zlati Stijeni cliffs. This species, which can grow up to 2.5 meters in length and weigh up to 83 kilograms, is classified as critically endangered. It typically inhabits warmer waters off the coast of Africa, usually in shallower depths, around 150 meters, but rarely appears in the Adriatic, especially near Croatia. The footage, captured by a diver using a camera, shows the unusual sight of this large reptile gliding through the water. Aetomylaeus bovinus is distinguished by its flattened body, wide flippers resembling wings, and a long tail with a venomous spine used for defense. Although the animal is fascinating to observe, experts warn against approaching it too closely. The venomous spine on its tail can cause painful stings, though fatalities are extremely rare. Nonetheless, medical attention is recommended after any encounter, as the toxin could lead to infection or complications. This sighting adds to growing concerns over the declining populations of marine life in the region. The leatherback sea turtle is one of the largest sea turtles and plays a crucial role in maintaining the balance of marine ecosystems. However, due to habitat loss, pollution, and climate change, these creatures face increasing threats. Conservationists have noted that such sightings are becoming less frequent, highlighting the urgent need for continued monitoring and protection efforts. Meanwhile, another unusual marine phenomenon has sparked interest among scientists and the public. In the waters near the Spanish city of Las Palmas, divers recorded footage of a mysterious organism resembling a long, transparent tube. Identified as Pyrosoma atlanticum, commonly known as the siphonophore, this creature forms colonies composed of thousands of tiny organisms connected together. These colonies can grow up to 18 meters in length and emit bioluminescent light, creating a mesmerizing underwater display. While often mistaken for a single large animal, the siphonophore is actually a complex colony of smaller organisms working in unison. These organisms filter plankton from the water and drift with ocean currents, although they can sometimes move independently by adjusting their internal pressure. The presence of Pyrosoma atlanticum in the Mediterranean is rare, but occasional reports suggest that the species might be expanding its range. Scientists believe this could be linked to rising sea temperatures and changes in oceanic conditions. Such findings underscore the dynamic nature of marine ecosystems and the importance of ongoing research and conservation initiatives. In addition to these remarkable observations, researchers are also focusing on the health of seagrass meadows, particularly the species Posidonia oceanica. Known as Neptune grass, this plant is vital for coastal ecosystems, providing habitat for numerous marine species and stabilizing sediments. Recent surveys along the coast between Isola and Koper have revealed concerning declines in seagrass coverage, attributed to factors such as sedimentation from dredging activities, increased sand movement, and the impact of a specific fish species, the horse mackerel (Sarpa salpa). Sarpa salpa, a herbivorous fish, feeds on seagrass and other vegetation, significantly affecting the structure and density of these habitats. Overgrazing by this species has led to noticeable reductions in seagrass height and coverage, diminishing the overall productivity of these underwater meadows. Experts warn that unchecked grazing could transform once-thriving seagrass beds into barren areas, reducing biodiversity and ecological resilience. Efforts to monitor and manage these impacts continue, emphasizing the delicate balance required to sustain marine environments. Elsewhere, in the Strait of Gibraltar, authorities have launched an investigation following reports of injuries on the back flippers of a female orca named Toni, who leads a group known for its interactions with ships. The wounds, believed to be consistent with gunshot injuries, have raised alarm among conservation groups. While there is no conclusive evidence of deliberate harm, the potential risk of infection has prompted officials to collaborate with Portuguese authorities, as similar injuries were observed in orcas traveling from the Atlantic. The orca population in the Iberian Peninsula faces multiple challenges, including food scarcity, physical trauma, and human-related disturbances. Despite these pressures, the group numbers around 30 to 40 individuals, making them one of the smallest remaining populations. Researchers continue to study the behavior of these intelligent mammals, seeking to understand whether their interactions with vessels are intentional or accidental. Conservation advocates stress the importance of protecting these animals from further harm, advocating for stricter regulations and greater awareness among maritime operators.
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