Saltwater fish

The first difference is the tide. Twice a day the level and the current change, uncovering whole areas and putting food back into motion. It decides access to marks, the hour you fish and often the result: the same place can be excellent for one hour and empty the next.

The second is salt, which attacks anything left to it. A reel rinsed after every trip lasts years; the same reel left as it is seizes within a season. It is a maintenance constraint freshwater fishing simply does not have.

The third is scale. Many marine species do not live on a spot but on a route, following temperature and bait shoals through the year. Their presence is seasonal rather than geographic — knowing when is often worth more than knowing where.