Human activities focused on the exploitation of natural resources are causing Serious damage to the habitats of numerous species. As a consequence, many animal populations are suffering a dramatic decline in the number of individuals of their species, in some cases reaching on the brink of extinction.
One of the most worrying cases is that of the Seahorse and needlefish populations in the Mediterranean Sea, which are being seriously affected by various activities. What is happening to these species and how can we stop their disappearance?
Shrinking seahorse populations
The International Union for Conservation of Nature (IUCN) has issued a stark warning about the first evidence of a alarming decline in seahorse and needlefish populations in the Mediterranean Sea. This phenomenon is due, among other factors, to the deterioration and destruction of their habitats, mainly due to human activity. The main causes include: Trawling, which not only destroys their environment, but also causes incidental capture of these animals.
Once captured, many are not returned to the sea. Instead, they are destined for for sale in aquariums, traditional medicines and for use as religious amulets or curiosities.
Threats to seahorses
Globally, more than 60 million seahorses are captured every year, mostly for illicit commercial purposes. Among the main destinations is the black market for traditional Chinese medicine, where seahorses are valued for treating various conditions, such as asthma or erectile dysfunction. According to researcher Miquel Planas, part of this trade originates in areas such as Southern Portugal o Peru, although in places like Málaga, Spain, significant seizures of illegally captured specimens have also been made.
The global warming is another crucial factor in the loss of their habitats. As ocean temperatures rise, seahorses may be forced to move to more northern areas, affecting the availability of nutrients and vital spaces for their survival. These animals live mainly in seagrass meadows, mangroves and coral reefs, ecosystems that are rapidly disappearing due to both climate change and other human impacts, such as pollution and coastal construction.
Impact on the ecosystem
The disappearance of seahorses not only has a direct impact on their own species, but also unbalances marine ecosystems in which they live. Being animals highly dependent on their habitats, such as seagrass meadows, their loss implies dramatic changes in The Biodiversity of the environment. These ecosystems provide shelter and food for seahorses and many other species.
The decline of seagrass meadows also increases the risk of population migration, which is an additional risk since seahorses are Sedentary species and poor swimmers. Consequently, the lack of mobility means that if their habitat is destroyed, they cannot easily escape and find a new one.
Conservation efforts
Fortunately, steps are being taken to halt the decline of seahorse populations. Among the most notable conservation projects is the Hippo-DEC, directed by Miquel Planas, which aims to evaluate the seahorse populations on the Spanish coast and provide the necessary information for these species to be included in the Spanish Catalogue of Endangered Species.
In addition to local efforts, there are global initiatives such as iSeahorse e iNaturalist, citizen science platforms that allow anyone to contribute images and data about seahorse sightings in the wild. This data helps researchers track populations and their distribution, which is crucial for making informed conservation decisions.
On the other hand, some NGOsas the Oceanids with their Save Little Big Seahorse project, are actively working on the reintroduction of captive-bred seahorses in their natural habitats, as well as in the creation of a monitoring network More than 2.000 divers to track the health of these ecosystems. At the regulatory level, several species of seahorses are protected by the Convention on International Trade in Endangered Species (CITES) and also by the Barcelona Convention, which protects the marine environment in the Mediterranean.
However, many experts agree that these regulations are not enough. A structured effort is needed to restrict trawling and dredging operations, together with the creation of strategically located marine protected areas to ensure the recovery of seagrass meadows and other key habitats.
Importance of awareness
Environmental awareness also plays a key role in protecting seahorses. According to the researcher Michael PlanasThe more we know about these animals, the more effective conservation measures can be. In this sense, educational and outreach initiatives, such as those led by the Oceanogràfic of Valencia, are promoting the recovery of accidentally captured specimens and raising awareness among both the public and the fishing sectors.
To ensure the success of these conservation projects, it is crucial that activities that cause the destruction of marine habitats, such as beach recreation or the construction of coastal infrastructure, are kept under control and regulated, allowing seahorses and other marine species to recover and thrive in their natural habitats.
The future of seahorses depends on a global collaboration involving both scientists and citizens. Awareness raising, continued research and the implementation of stricter regulations are essential to ensure the survival not only of these enigmatic creatures, but of the ecosystems they support.