Table schema:
CREATE TABLE table_name_50 (percentage_of_marine_area__foreez_ INTEGER, ecozone VARCHAR, percentage_of_total_area__foreez_ VARCHAR)

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 table_name_50 WHERE ecozone = "pacific marine" AND percentage_of_total_area__foreez_ > 3.1