I absolutely adore the cosy British detective show trope where police have already fully searched the scene, then the odd genius one comes along with tweezers and a magnifying glass, and says “aha!” as they lift up a clue that could be seen from space.

Whenever insiders discover something that doesn’t fit with the status quo, they file it away without further investigation. We’ve seen and recorded some pretty weird stuff with various ocean equipment. Believe it or not, we still use the multibeam sonar method developed in the late 1970s.