The Wrap
http://www.thewrap.com/movies/column-post/brian-helgeland-write-sea-monsters-movie-here-there-be-monsters-29468
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According to The Wrap, Brian Helgeland (L.A. Confidential, Mystic River) has been hired to write Here There Be Monsters, a movie about Revolutionary War Naval hero John Paul Jones — except with sea monsters, individuals close to the project confirmed.
Producers of the Warner Bros./Legendary project are in talks with Robert Zemeckis to direct. Here There Be Monsters is based on an concept by Legendary Pictures CEO Thomas Tull.
More on this one as it comes.
UPDATE
According to MovieWeb Robert Zemeckis has officially signed on to direct.