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Sea Lions and Algae Bloom

Santhosh Kumar 30/06/2023

Sea lions and algae bloom upsc notes
Context
Recent outbreak of algae bloom
Effect on sea lions and dolphins in California, US
Sea lions (IUCN Status – Endangered)
Pinnipeds with external ear flaps, long fore flippers
Can walk on all fours
Short, thick hair
Large chest and belly
Range extends from subarctic to tropical global ocean
Except northern Atlantic Ocean
Algal bloom/red tides
Excessive growth of algae causing water discolouration
Human causes: climate change, excess nitrates
Red tide: presence of dinoflagellate Gonyaulax
Impact
Production of neurotoxin (domoic acid)
Death of fish and other aquatic organisms
Toxin passed up food chain (humans can be affected via infected shellfish)

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Categories: Species

Tags: 30.06.2023, Newsbits

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