Skimming is to pass over the surface of water. But is there a word for doing the same on the underside?
In that case, just about any movement you can describe above the surface can be used to express what happens underwater (besides walking and strolling and such, unless it's a crustacean or other sea creature moving along the sea floor).It's just a fish.
In that case, just about any movement you can describe above the surface can be used to express what happens underwater (besides walking and strolling and such, unless it's a crustacean or other sea creature moving along the sea floor).
You can say, "The fish skimmed below the surface," which the reader will easily understand as occurring within the water column, most likely near the top.
surely skimming implies on the top of the water. The O.P. wants movement under the water?
Thus under is necessary.
Flying fish do skim the surface, then jet propel themselves upwards, as well as just shooting out of the water.