Fighting their way through many other obstacles , like the Sirens and Circe 's island , they join up with Clarisse , Grover , and later Tyson ( who did not die ) , and leave with the Golden Fleece . Fighting their way through obstacles , such as the Sirens and Circe 's island , Percy and Annabeth join up with Clarisse , Grover , and later Tyson , and escape with the Golden Fleece .