Cone snails - These things are bonkers .. They can tailor venom to task using a variety of compounds and toxins stored n their venom sacks. Medical research has found a "supermorphine" compound and there are millions of other toxins in the genus to research.
Should keep one as a pet to sort out my enemies ???
If your enemies are small fish - otherwise get a Blue Ringed Octopus and ask them if they want to hold it. That should do it lol. They can be fatal to humans though so yeh, bit scary!!
One incredibly beautiful incredibly deadly little octopus.. There is a Reddit post about this photo - I will try and find the link .. The octopus is angry as it's spots are vivid. These things give imperceptible nibbles and inject venom to which there is no antidote known. The wiki page on them explains their venom. It is really complex. This guy is terminally ill and allegedly cares not. You never hold these things. Partic when the spots are blue. Luncay.