I received my Master's in Remote Sensing and the infrared spectrum barely penetrates water.
Infrared doesn't travel any distance through water. Now blue-green will travel a lot farther through water.
Hi nfun,
i am intrigued, by your comment on having a masters in remote sensing, in what context or scope does that degree encompass ?. as that could cover soo many different types of targets (metals,military,people,planets,etc.), equipment or methods, scale or to what degree (nano-freq-thermal, UHF,VHF, PI, spectrum) ?,
there is a reason that i'm asking... but... i won't bother going into details just yet. but given the site we are on i'm assuming that you had your eye's set on metal or treasure sensing capabilities

i also noted that you have a plane as your avatar, could that be your working platform ?.