After trawling through everything, they identified 30 studies, with a grand total of 1171 participants, that met their criteria for being scientifically sound.
But according to Amanda Vincent, a university professor and Rolex awards laureate, bottom trawling is still a danger to seahorses and she's working to protect them.
Harmful practices, such as bottom trawling, can be banned altogether, and we can establish marine reserves closed to all fishing to help ecosystems restore themselves.
Mostly, because eDNA sequencing is much less invasive than trawling, these scientists think it’s a promising option for future fish studies, even though it still needs some refining.
It involves letting trees return to places that have been denuded, allowing parts of the seabed to recover from trawling and dredging, permitting rivers to flow freely again.