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Nine New Sponge Species Discovered in Alaskan Waters
14 Sep
Summary
- Nine new deep-sea sponge species were identified in Alaska.
- Sponges create vital seafloor habitats for fish and crabs.
- Mining and trawling threaten these unique Alaskan ecosystems.
Scientists have identified nine novel deep-sea sponge species in the Gulf of Alaska and the Aleutian Islands, expanding the known sponge diversity in the region to 232. These discoveries, analyzed from samples collected as far back as 2012, highlight the ecological importance of sponges. Sponges act as living water pumps, filtering seawater and constructing intricate seafloor habitats that are essential for commercially valuable fish and crab populations.
Researchers rely on microscopic skeletons and genetic material, like DNA barcodes, to distinguish sponge species due to their simple structures. These newly identified species underscore the vast, unexplored biodiversity of deep-sea environments. Despite their crucial role in supporting marine life and their potential for yielding valuable biochemical compounds, these Alaskan sponge communities are increasingly imperiled.
Threats include proposals for expanded seafloor mining for critical minerals and continued bottom trawling. Environmental advocates warn that these extractive activities could devastate fragile ecosystems, harming fish nurseries and overall ocean health for short-term economic gain. Similar deep-sea mining proposals are also being considered in other Pacific ecosystems.
