Conservation challenges for aquatic and marine snakes.

Sea Snake Threat Levels: The International Union for the Conservation of Nature (IUCN) categorizes sea snakes into different threat levels. Notably, 9% are classified as threatened, 6% as near threatened, and a concerning 34% as data deficient (Elfes et al., 2013).

Commercial Trade: Commercial trade, particularly in sea snake products, poses a significant threat to these reptiles. This trade includes sea snake meat, blood, organs, skin, and even whole sea snakes, used for various purposes, including traditional medicine and elixirs. Demand for these products has increased (Nguyen et al., 2014).

Bycatch in Fishing: Sea snakes are vulnerable to bycatch in trawl fishing, leading to injuries and mortality. This bycatch occurs in various countries; its impact varies depending on the species. Conservation measures must address this issue, especially in regions with high levels of bycatch (Roe et al., 2003; Courtney et al., 2010).

Habitat Degradation: Sea kraits, a type of sea snake, have specific habitat requirements, primarily dependent on intact shallow coral reefs and nesting sites. Habitat degradation, including coral reef decline due to pollution and climate change, has had negative effects on these populations (Elfes et al., 2013).

Climate Change: Climate change affects sea snakes through warming ocean waters, bleaching coral reefs, and drought-induced impacts on freshwater ecosystems. These changes disrupt marine ecosystems, impacting sea snake prey abundance (Vogrinc et al., 2018).

Pollution: Pollution poses a significant threat to sea snakes, with pollutants accumulating in their bodies. This can lead to health issues and even neoplasia. Additionally, marine contaminants, including plastics, contribute to sea snake mortality, though the exact effects remain unclear (Gillet et al., 2017; Nguyen et al., 2014).

Freshwater Snakes: Freshwater snakes face threats, including habitat loss, pollution, and mining activities. Habitat fragmentation and degradation in wetlands affect various wetland reptiles, requiring conservation efforts (Dahl, 1990; Sterijovski et al., 2014).

Conservation Strategies: Conservation strategies should focus on monitoring and controlling bycatch, protecting and restoring habitats, and studying breeding biology and genetics to inform conservation decisions. Awareness and education among local communities are essential, particularly in regions where indifference to conservation issues prevails (Rasmussen et al., 2011; Elfes et al., 2013).

Bycatch Reduction Devices: Implementing bycatch reduction devices (BRDs) in fishing practices can significantly reduce sea snake bycatch. The type and placement of BRDs can be tailored to specific fishing grounds and target species, reducing mortality while not affecting market availability (Raudzens, 2007; Milton et al., 2009).

Local Awareness and Socio-economic Factors: In regions where sea snakes are harvested, addressing socio-economic factors, such as poverty, is crucial for conservation. Protecting snakes during their breeding season can be an effective tool for their protection (Brooks et al., 2008).

In summary, the conservation challenges facing sea snakes and other reptiles are multifaceted and require a combination of measures, including reducing bycatch, protecting habitats, and increasing local awareness. Additionally, addressing the impact of climate change and pollution is essential for the long-term survival of these species.