This. Actually this is precisely the thing that a scientist is getting asked. Whom have we worked with, and on what topics.
Regarding the original question: we are in the clear on everyone now offering their favourite (tech)-agency because the require much. I do have a completely different question: from whom can I learn the things I am interested in?
Why would you consider Scuba Diving a Nitch field? Scuba diving is not at all a nitch subject, technical diving is, but OW diving within NDL limits is not.