New research is shedding light on how far toxic algae blooms have spread in Alaska, and surprised scientists are saying this is just the beginning.

A study from the National Oceanic and Atmospheric Administration’s Northwest fisheries center found domoic acid and saxitoxin – algae-produced neurotoxins that are deadly in high doses — in 13 marine mammal species across Alaska, including as far north as the Beaufort and Chukchi seas.

Researchers say the study is just the latest piece of evidence that warming ocean temperatures are allowing these blooms to stretch into Arctic ecosystems, threatening marine life and the communities who rely on the sea to survive.

“The waters are warming, the sea ice is melting, and we are getting more light in those waters,” said Kathi Lefebvre, NOAA Fisheries research scientist. “Those conditions, without a doubt, are more favorable for algal growth. With that comes harmful algae.”

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