pist - porb
- piston corer
- piston sampler
- pitching
- placement of wastes
- plainfish midshipman
- plankton feeder
- plankton net
- plankton trawl
- plankton-eater
- plankton-eating
- planting of fish
- pluma
- poacher
- poachers
- point of law
- polar bear
- polar cod
- polar dab
- polar eelpout
- pole net
- pole trawl
- pole-and-line fishing
- pole-and-lining
- police vessel
- pollacks
- pollocks
- pollutant
- pollution of the marine environment
- polymetallic nodules
- polymetallic sulphides
- pompano dolphin
- pond culture
- poor catch
- poor year-class
- population ceiling
- population dynamics
- population estimate
- population growth
- population level
- population of fish
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