Do Caterpillars Make Good PETS? And How Much Time Do They Need To Spend At The Beach?

Apparently I haven’t seen very many caterpillars in my life because Colt found the biggest, hairiest, fastest, coolest caterpillar I’ve ever seen... and he had friends. I have so many questions: What kind of caterpillar is this? Why are they on the beach? And should I let the kids keep him? We named him Maverick BTW.