Attempt to kill the beast/The Plesiosaur's death

This is where Willy and Dolphy attempt to kill the beast and how the Plesiosaur's death goes in The Plesiosaur.

[We see our heroes building a huge shark-proof cage]

[While Willy is preparing a venom spear]

Willy: Let's go.

[Dolphy and Willy hop into the cage and then the cage is lowered down into the sea]

[They've waited, and waited. Then bang!]

Dolphy: Wha!

[then the beast hits the side of the cage again]

Willy: [drops the venom spear]

[The beast then bangs on the cage more]