3 ms·
Earth has something like 150 million square kilometers of ocean. 4mil is a tiny corner of that area. Depth/light remains by far the primary limitation for sea
by sandworm101 4y ago
Earth has something like 150 million square kilometers of ocean. 4mil is a tiny corner of that area. Depth/light remains by far the primary limitation for sea grass, preventing it from even attempting to colonize the vast majority of the worlds oceans. Compare other carbon sinks like plankton which can exist across the ocean irrespective of water depth.
- s1artibartfast 4y agoSure, but Im not asking why seagrass doesn't cover the entire ocean or entire planet. I'm asking why it doesn't cover more area than it currently does it appears that light and substrate is an insufficient answer. 90% of the area with suitable light and substrate is not covered, so something additional is going on.