Table: canada_ecozones
Columns: ecozone
area_km_territorial_waters
area_km_exclusive_economic_zone
percentage_of_total_area_foreez
percentage_of_marine_area_foreez

Question: What is the smallest percentage of marine area for Pacific Marine ecozone and percentage of total area greater than 3.1?
SQL: SELECT MIN("percentage_of_marine_area_foreez") FROM canada_ecozones WHERE "ecozone" = 'pacific marine' AND "percentage_of_total_area_foreez" > 3.1