Upvote:5
Lionfish are a highly invasive species and I've seen them a lot when diving or snorkeling. Often a dive master or guide will spear them just to reduce population and slow down the spread. Their spikes are indeed venomous but they are not aggressive. As long as you keep some reasonable distance you are perfectly safe. Stings are rare and mostly accidental. Don't step on one or try catch them by hand !