There is a particular creature men fish for. Its unique quality is that it has no constant form. When caught and brought to the surface it may be one of a million startlingly different shapes, no two identical, but all having a resemblance, such that you know they are the same sort. It’s very strange.
The creature lives at great depths, in total darkness, and it seems that, at that depth, in the dark, its shape is ever changing. But the moment it is touched by anything external, be it hook, light or even the subtle vibration of microwave detection, it fixes in that shape. It is a most tantalising creature.
Some fish for it constantly, hoping that each one they catch, when they see its newly-fixed form, will be the one they have always been looking for. Others fish in order to build collections, in as great a variety as possible, or in certain shapes. Another group, rather more subtle, let down their lines and, when the creature’s hooked, try to divine its form, releasing it when they’ve checked; many and bizarre are the shapes these fishermen visualise. And there are those, heroic, foolish or mad, who plunge into the depths, the directionless blackness, to embrace these creatures directly. No one knows what they experience, as none ever returns.
If you have any sense, you will ignore these creatures.
But if you must go fishing for them, do this. Instead of bait, sensing devices, cameras, let down, on a long line, your imagination. Lie back, on a boat pitching in the storm’s ferocity, or undulating gently on a sea of soft glass, above you clouds moving slowly, stars shining, a typhoon spinning, with the line tied to your big toe, Huckleberry Finn fashion, and let your imagination explore. Be still. Move fast as light. Be passive as plankton. Follow, with senses sharp, every nuanced subtlety of your imagination’s exploring. Take all the time in the world.
When you haul in your line, empty, of course, you will have no notion at all of the creatures’ shapes. But you will know all that’s important to know about these singular denizens of the deep.
And then, most serious piece of advice: do restrain yourself from telling others what you know. You won’t be understood. If you must tell, be very, very careful what you say, and to whom.