We can decode this to give
A creature of the sea fights crime beneath a city's street.
Leonardo, the teenage mutant ninja turtle, who fights crime in the sewers of New York.
A shepherd has his final meal, a woman's smile is sweet.
Leonardo da Vinci, known for 'The Last Supper' (Jesus the shepherd) and 'Mona Lisa'.
Two people fall in love, an icy death half of them meet.
Leonardo DiCaprio who dies after the Titanic hits the iceberg, while Kate Winslet survives.
Two ones, a two, a three, a line that never is complete.
The infinite sequence: 1, 1, 2, 3, 5, ... is known as Fibonacci sequence after Leonardo Bonacci.