Sealblr - Blog Posts

please stop calling the california sea lions that are acting abnormally “demonic”. they are experiencing domoic acid toxicosis. domoic acid (DA) is a neurotoxin that is made by an algae called pseudo-nitzschia australis. fish eat the algae and the sea lions eat the fish. this buildup of DA in their system is what causes the behaviours we’re seeing. symptoms of DA toxicosis include: lethargy, disorientation, unpredictable behaviour, seizures, brain damage, and eventually death.

as far as we know, there have only been two unprovoked sea lion attacks on beaches. the vast majority of sea lions with DA toxicosis are not aggressive unless provoked. they are disoriented and they are acting out of fear.

DA is naturally occurring, but the algal blooms of pseudo-nitzschia australis have been increasing due to rising temperatures from climate change and water pollution. we are doing this to them.

affected sea lions seem to have pretty much a 50% chance of survival with treatment. they need IV fluids to flush out the toxin and some will need seizure medication as well. the marine mammal care center is completely overwhelmed with the amount of sick sea lions they are taking in and they need funding to keep up. you can donate to them here.

always stay at least 45 meters / 50 yards away from marine mammals! it protects both them and us!

sealed with a kiss 💋

casey and hogan - seattle aquarium