Search - Local Environmental Observer (LEO) Network

Algal Bloom in the North: Up to 1 Million Dead Fish

10 May 2025

Ibestad, Troms, Norway

An algal bloom in Northern Norway dominated by Chrysochromulina and Phaeocystis has caused massive fish die-offs in recent weeks, with up to one million farmed fish reported dead around Astafjorden.

NRK Troms og Finnmark / Trygve Grønning

Previous Next

	Algal Bloom	86
	Ocean / Sea	38
	Surface Waters / Wetlands	34
	Human Health	24
	Death / Die-off / Decline	23
	Microbes	18
	Sports / Recreation	17
	Safety	17
	Fish	16
	Invertebrates	15
	Economic Impact	14
	Unusual Size / Abundance	11
	Food Security	11
	Pets	11
	Paralytic Shellfish Poisoning	10
	Water Security	9
	Birds	8
	Cultural Impact	8
	Plants / Kelp	8
	Unusual Range / Sighting	7
	Extreme Temperature	6
	Aquaculture	4
	Fisheries	4
	Land Mammals	4
	Pollution	4
	Seasonal Timing	4
	Marine Mammals	4
	Extreme Precipitation	3
	Groundwater	3
	Land	3
	One Health	3
	Sanitation	3
	Weather	3
	Air Quality	2
	Air	2
	Deformity / Disease / Injury	2
	Displacement	2
	Infestation	2
	Transportation	2
	Amnesic Shellfish Poisoning	1
	Agriculture	1
	Unusual Animal Behavior	1
	Drought	1
	Buildings	1
	Livestock	1
	Reptiles	1
	Ice / Snow Change	1
	Vibrio parahaemolyticus	1
	Pathogen	1
	Surface Waters / Wetlands	1

	United States	45
	Canada	8
	New Zealand	3
	India	2
	Norway	2
	Costa Rica	1
	Curacao	1
	Finland	1
	Singapore	1
	South Africa	1
	Spain	1
	Turkey	1
	Turks and Caicos Islands	1
	United Kingdom	1

	Summer	42
	Spring	15
	Fall	13
	Winter	13

	2025	3
	2024	4
	2023	9
	2022	6
	2021	12
	2020	12
	2019	24
	2018	11
	2016	1
	2015	1
	2012	1
	2010	1

	January	6
	February	6
	March	3
	April	6
	May	6
	June	12
	July	10
	August	21
	September	8
	October	3
	November	3
	December	1

Explore Posts

Submit a Post

Directory

About

My LEO

From		To
	-