Tiger Shark ceases the hostilities to help rescue his sister , who is trapped in a cave - in .
During the Acts of Vengeance storyline Tiger Shark battles Wolverine ; feigns illness to escape prison , and eventually battles Stingray .
storyline   ceases the hostilities to help rescue Wolverine 's sister , who is trapped in a cave - in .
During the Acts of Vengeance storyline Tiger Shark battles Wolverine ; feigns illness to escape prison , and eventually battles Stingray .