Double underwater speargun

An underwater speargun comprising:

• an elongated tubular barrel having a forward end, a rear end, and an upper and lower spear support means, a hollow hand grip attached intermediate the ends of said barrel, upper and lower pivotally attached trigger means located inside said hand grip, upper and lower pivotally attached sear means engaging respective ones of said trigger means, first and second elongated spear means for slidably engaging said spear support means, each of said spear means having means at one of its ends for releasably engaging said first and second sear means and further having at said one end means for releasably attaching sear propelling means;
• upper and lower safety means for automatically locking said respective trigger and sear means and to release said sear means when said trigger and safety means are simultaneously activated, said sear spear propelling means being elastic means attached to and stretched from the forward end of said barrel and attached to respective ones of said spear means at one end, and at least one tubular structure attached to said speargun and sealed at its ends to form an airtight chamber whereby the buoyancy of said speargun is increased to achieve neutral buoyancy under water.