Awful, awful shot, but ballistiform swimming mode can be clearly identified in the video that these stills were taken from, and this is the most expected triggerfish in the area.
This reord is for the variable groundsnake. there is a seperate record for the shovelnose in the picture.
Found washed up in the tide.
In the mountains of Central valley NW of Poas. The lateralis is common in these mountains. Could it be a joven?, looks pretty husky.