The oceans have risen by over 4 inches since 1992, and this rise puts communities and ecosystems in jeopardy. The rise in heat causes the water to become warmer, disrupting sea life and causing extreme coral bleaching events. Increased absorption of CO2 makes the waters more acidic and thus threatens useful organisms such as shellfish and coral reefs. Warmer waters feed into stronger hurricanes that can do more damage to coastal areas. The ice is melting, which uncovers the darker water surfaces, and that can absorb more solar heat; the effect will amplify global warming. These measured changes in ocean conditions are but a glimpse of what is happening in the world due to climate change. Many renowned organizations, such as NASA, study the environment without having financial interests in the outcome. Decades ago, large fossil fuels companies, like ExxonMobil, also knew two decades in advance about the possible dangers of climate change and did absolutely nothing to reveal any information to the public. Climate change is real. It's driven by human activity, and it is having a significant impact on our planet, including vital ecosystems within all of our oceans.
Here are my links: source 1, source 2