The Cat and the Mermouse (1949)
A day at the beach Tom wants to lay in the sand, but his rest is disturbed by Jerry, who walks by to go fishing Tom ends up falling off the end of the pier as he chases Jerry and lands underwater, where he encounters a mermaid w
Kitty Foiled (1948)
Tom subjects Jerry to his usual harassment but the cat finds a new enemy, and the mouse finds a new friend, in the canary of the house