Sea snakes in Australia, like this Leaf-scaled sea snake, are experiencing a drastic decline in numbers for reasons that puzzle scientists.
From The Conversation, as part of its on-going series on wildlife conservation in Australia:
The reasons for the severe declines of Short-nosed and Leaf-scaled sea snakes remain a mystery. Nine other sea snake species have disappeared from Ashmore and Hibernia over the last 15 years, yet their habitats are intact, and snakes are not affected by over-fishing. This may suggest major environmental change, perhaps related to surface water temperatures, salinity and rainfall patterns, and sedimentation. In the same period seismic surveys for oil and gas have increased, using air gunning, although the impact on sea snakes is unknown.
Whatever factors are responsible, they have not only affected the snakes in shallow coral areas but also species that once occupied the reef edges, seagrass beds and deeper waters surrounding the reef.
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Photo: The Conversation
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