Complex sentence: The venoms of the sea snakes are nonetheless among the most toxic venoms known, and due to the fact that sea snakes are typically unable to easily prevent the escape of bitten prey, their venoms have evolved to act very rapidly.
Split into simpler sentences: The venoms of the sea snakes are nonetheless among the most toxic venoms known. It has been argued that since sea snakes are typically unable to prevent the escape of bitten prey, their venoms have evolved to act very rapidly.