Seaman Morty
One of the real treats in this movie is getting a peek at Bob Beneveds, who plays Seaman Morty -- the poor guy who goes for an evening swim with his girl & they both turn into Kraken food.
This may be Bob's most visible role. Later in life he gave up acting & was the lifelong companion of Raymond Burr ("Perry Mason"), as well as his business partner.
I saw him interviewed not long ago in a feature on Raymond Burr, so I watched for him in this movie -- one of the favorites of my childhood anyhow.
Salud, Bob! Sorry about that giant sea-worm, but I'm glad things got better after that.