The application comes with a user-friendly interface that is easy to understand and navigate regardless of your experience with similar apps.

Enables you to create maps based on NMEA data in real time ARD were seen in small pods (1-4), however several pods would aggregate over time in relatively large numbers (10-20) around the boat.Ī-4 Characterization of Side Scan-Sonar Images Produced by Amazonian River Dolphins (Inia Geoffrensis) to Reduce Potential Confusion during Surveys of Amazonian Manatees (Trichechus Inunguis)ReefMaster is an application specialized in helping you create custom 3D underwater maps where you can precisely mark the waypoints that you want to explore or that you already researched in your expeditions. They would swim under the boat and approach the SSS transducer, suggesting they could hear the sonar, but were not distressed by it. ARD in Lake Amanã repeatedly followed our boat for kilometers during several hours. Unlike the acoustic images produced by manatees, ARD acoustic images contain sharper angles and the shadow is narrower. ARD produced a characteristic wavy tail in the shadow of the image. Sonar surveys were recorded and then analyzed with ReefMaster Sonar Viewer (v. Boat surveys using SSS were conducted during the high (July 15-30, 2017) and low (December 13-21, 2017) water seasons in Amanã Lake, Amazonas, Brazil. In this study we characterize the sonar image produced by ARD and make notes on behavior observed during surveys for Amazonian manatees. In contrast, the Amazonian manatee shares most of its habitat with two cetaceans, the Amazonian River dolphin (ARD, Inia spp.) and the Tucuxi ( Sotalia fluviatilis). While West Indian and West African manatees share habitat with small cetaceans in estuarine and marine habitats, their potential confusion in sonar images has been avoided because of their reluctance to approach the boat during surveys. One potential difficulty with this methodology is differentiating manatee images from other large aquatic vertebrates. Side-scan sonar (SSS) has been successfully used to detect West Indian and West African manatees, however confirmed sonar images of Amazonian manatees have not been obtained yet.

Reefmaster sonar viewer