For me, the majority of the coastline of France is either so overrun by tourists as to be indistinct, or where I have fond memories, regrettably not recommendable as they were due to occasion rather than location. One exception to this rule, and a great venue to have in the bag as a pre-ferry or tunnel activity, is the Nausicaa - perched upon the seafront of Boulogne-sur-Mer.
The Nausicaa should not be compared to the aquariums found in many towns in Britain - it's a larger, more immersive experience which communicates mans ongoing relationship with the sea. More than just tanks of fish, the theatres and films take you on a journey of understanding, leaving you feeling enriched as a result of the experience.
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