Monitoring environmental conditions and pollution. On the other hand developing pollution removal technology. Developing land based technology is important too. We must develop land based processes in such a way they do not pollute our oceans. On the other those existing processes should be developed in recycling sea pollutants as raw material.
The technology has always been there, Nikola Tesla knew it. The societal hierarchy and greed of the 1% of the 1% hold far too much power. Until some real change happens there, at the highest layers of rulership, all other collaborative efforts will fall short. (thealchemistweb.com)
GIS, space imaging, remote sensing, underwater recording, all of which can help with monitoring the conditions and track the movement of the oceans, detect and alert the problems need immediate care and define MPAs, utilizing clean energy powered watercraft and all transportations to name a few.
Educating fisherman and sailors who are more close to ocean can be a small boost to start with this big process. Once educated they can use the current technology to find news ways to innovate on preservation and help to build a sustainable environment. A proper reward mechanisms for Big corporation who comes up with new ways to identify and solve these problem. It all boil downs to Market and economics and hence educating children to work for companies which are environment conscious. Change the definition of money by giving equal weightage to carbon credits hence finding a new equation for building wealth and economies.
We must greatly reduce the amount of pollutants allowed into our waterways that flow into our oceans, Pesticides, fertilizers and chemicals used in manufacturing plus coal ash which is changing the oceans temperature and currents which effect our weather patterns and composition of the atmosphere.
We can recycle, reuse or biodegrade everything. Technologically speaking, apps can be used to give us best practices in recovering our planet, these apps can recommend washable food storage instead of plastic containers, biodegradable packaging, & other ways to get to zero pollution. Also, we can drive electric cars that require no batteries by developing solar and wind generators. Driving generates wind, if we start a vehicle using solar & then use wind to propel it constantly, we will no longer need fossil fuels for our cars.