Threats to shell animals
Here is also another example, Most of the talk around a warming planet discusses rising land temperatures. But 90 percent of excess heat trapped by greenhouse gases goes into the ocean. The ocean is the great heat reservoir. It’s in the top kilometre of the ocean. A hotter atmosphere holds more water. There’ll be more rainfall. The other effect of increased atmospheric CO2 is its dissolution in sea water. This produces an even bigger problem than heat, and that’s the increasing acidity of ocean water. See in this photo it shows that the water can harm the thin shell. Marine pollution and debris
A staggering amount of solid garbage, and pollutants such as oil, fertilizers, sewage and toxic chemicals, also enter our coastal and marine environments each year. Recreational fishing and boating Australia’s coastal population is growing, recreational fishing is increasing, and technological advancements, larger boats and larger engines mean that fishing is more efficient than ever. |
Threats to fish
Fishing is central to the livelihood and food security of 200 million people, especially in the developing world, while one of five people on this planet depends on fish as the primary source of protein. Climate change impacts Climate change is affecting ocean temperatures, the supply of nutrients, ocean chemistry, food chains, wind systems, ocean currents and extreme events such as cyclones. |