Related PSA that drowning doesn't look like drowning [0] — people don't yell, splash, and wave like you might expect and is "almost always a deceptively quiet event".
[0] https://slate.com/technology/2013/06/rescuing-drowning-child...
[0] https://slate.com/technology/2013/06/rescuing-drowning-child...
If you are taking care of someone with autism around water, be super aware of that.
A child with autism is 160x more likely to die from drowning vs the general population [1]
[1] https://nationalautismassociation.org/resources/autism-safet...