22 Miss. Code. R. 5-03-103
APPROVED DEGRADABLE MATERIAL shall be defined as a material which after one (1) year of immersion in water loses at least fifty (50) percent of its tensile strength and for which a field test must be available to analyze the material for authenticity or the net must have a placard issued by the Mississippi Department of Marine Resources (MDMR) which will be permanently attached to the net certifying that the net is made of an approved degradable material. Any material previously approved by the MCMR under Title 22 Part 5 shall be deemed an "approved degradable material" for purposes of this Title 22 Part 5, regardless of whether the material meets the fifty (50) percent loss in tensile strength after one (1) year of immersion in water.
22 Miss. Code. R. 5-03-103