Marko was struggling violently, as two mermen tried to blindfold him. Tom watched in horror as he saw one of the men was twisting Marko's arms behind his back. A second man had pulled down Marko's goggles and was trying to tie a cloth over his eyes, while avoiding Marko's kicking feet. Without a second thought Tom swam forward. He butted hard into the man with the cloth. The man rocked violently and almost lost his balance for a moment, but with a flailing of his arms recovered. He waited till Tom got near then swung his arm violently, sending Tom flying, before turning back to Marko. Tom fell to the seabed, in a plume of sand and grit. His head was reeling. Come on, he growled at himself, as he blinked hard and straightened his goggles. Marko's in trouble.