Marine issues may include....
- Extreme weather events.
- Temperature of atmosphere.
- Temperature of water. SST.
- Salinity.
- Acidity.
- DO and hypoxia.
- Carbon and Nitrogen
- Sea level height.
- Over fishing.
- By-catch, including seabirds in fishing nets.
- Species changing their range and migration times.
- Species in decline and biodiversity challenges.
- Invasive species.
- Plastics and other trash, in gyres.
- Microbeads eaten by zooplankton, then fish, then humans.
- Mercury and Lead, from manufacturing processes.
- Other Pollutants.
- Sound pollution.
- Changes in deep currents and surface currents.
- Melting of glaciers.
- Thinning of Arctic Ocean ice.
- Interaction with wind-farm turbines.
