You're on vacation in the Philippines.

You see a cute octopus, covered in blue rings.

You decide to play with it, film it, and post it on social media.

You later discover that the octopus is one of the most dangerous marine creatures.

Yes, this happened.

In this case, the British tourist Andy McConnell.

These octopuses are toxic both when biting with their keratinous beaks (attack) – injecting TTX-laden saliva in the process – and when consumed (defense). They are the only known octopus species capable of delivering lethal bites to humans.

A minimum amount of 1.5 mg of tetrodotoxin (TTX) is lethal to humans, and death can occur within 17 minutes.