Official comment
It looks like you only used about 50% overlap in your data collection. 75% is the recommended value and if you are doing trees or any water 80% or more can be required. The difference between using 50% overlap and 80% overlap is the difference between getting 4 looks at everything vs 25 look at everything. The difference is huge.
Given that the area is 100% trees and moving ocean water it is a pretty hard scene to get to reconstruct at all but using the proper overlap would be a good start.
https://www.mapsmadeeasy.com/data_collection
As noted in the Data Collection guidelines that are agreed to at the time of upload:
Minimize the Inclusion of Water
Always in motion, highly reflective, and transparent, water has a lot of properties that make it hard to render well.
Large areas of open water will not likely process well in any photogrammetric application. While it may turn out well enough in a 2D ortho map, water rarely renders well in the 3D outputs and can add unsavory motion related artifacts. If you must include water in a survey area, try to keep some shore structure in place to give our processing something to hold on to.
Use LOTS of Overlap in Treed or Crop Areas
Trees are hard to render because they are typically almost always in motion and have a lot of fine detail.
Generally, the orthophoto portion of the processing may turn out fine at 65-70% overlap. However, if there are trees included in survey area and you want the 3D components of the processing to turn out well, we recommend using 80-90% overlap in order to make sure we have enough information to represent the trees properly. Also, avoid windy days when trees are involved.
