Multi-rotor drones are used to track animals oro wildlife. They are easily portabe, manuverabe, and don't cost much. Some negatives aboout multi-rotor dornes is they have a short flight time and have a low stability in the wind. Drones used to study marine mammals are very beneficial, especially as it allows us to see remote areas and new anges, and it is ess invasivve and cost effective. Generally, scientists study the beaviour, photo ID, abundance estimates, bio sampes, and photogrammetry of a marine mammal throguh the drones.
There has been a new invention made called Snotbot, which is a drone covered with petri dishes. What it does is the drone flys right into the snot that a marine mammal blows out, collecting the sample in a non-invasive form. The sample can help scientists determine the health of that mammal and if anything needs to be done.