What are the laws for purchasing and using a spear gun?

Question

Age requirements, licences, etc. (I am 16)

Answer 1

if in florida go to myfwc.com then do a search for spearfishing jt will take you right to the info you need. there are alot of rules that are diffrent than hook and line.

Answer 2

your best bet, to get an informed answer, would be to contact your local office, that handles fishing laws & enforcement