Jeeze I remember this killing an older man[1] on the Garden Route coast in South Africa while visiting said area.

According to the news releases at the time it needs the perfect mix of sea and fresh water at specific temperatures.

We opted to swim kilometers from river mouths to be safer.

[1] news article https://www.thegremlin.co.za/2016/02/11/eden-district-munici...

> “Other people in other locations don't know that. They will absolutely think, ‘Well, I hope it gets better in the morning,’ and in the morning, their hand is black.”

Jesus christ!, losing your hand in one night?!

Nothing will be done because we don’t want to scare anyone to take reasonable precautions