Hydrolyzes high molecular weight hyaluronic acid to produce small oligosaccharides (By similarity). Is an important component of the venom, since anti-hyaluronidase serum effectively neutralizes the lethal effet of the venom injected into mice. It may act by increasing the diffusion of other venom proteins by degrading the extracellular matrix. Random hydrolysis of (1->4)-linkages between N-acetyl-beta-D-glucosamine and D-glucuronate residues in hyaluronate. Expressed by the venom gland. Belongs to the glycosyl hydrolase 56 family.