No-take marine reserves are the best kind of ocean protected areas. They are super effective at saving sea life. A big analysis showed that fish numbers in these reserves are 670% higher than in nearby open areas. That's a lot more fish! Reserves also make ecosystems stronger and help big animals bounce back. Even with climate change, these reserves are holding up well. And the good news is that they can help local fishing and bring in money from eco-tourism. So, protecting ocean areas really works!