Scout 'n fuck!

An ingenious idea hit you! Why not scout the area, both land and sea, for materials and then bring it back to the elves to work on while you watched. You could use the talkative elf for speech practice and the others for crafts. To think its only been a day and you're already giving your harem roles. Your mothers would be so erect.

And while you're out hunting for materials, you can possibly find an undersea monster to take captive and fuck on your undersea journeys, either before or after collecting your stuff. Elves couldn't last so long under water with their puny dry oxygen craving lungs. Ah, the perks of being a superior hybrid.

With the giddiness of a hatchling, you sunk back into the water below and let the elves have some time to themselves. You had some exploration to do. You zipped right out of your cave and looked down to the sea bed below. You wouldn't find anything interesting too close to your home worthy of crafting attention save for some delicious fish and admittedly beautiful coral. No, you needed something like a sunken ship or perhaps some trees topside. You knew those elves were fond of their wood and stone craft but they might be able to make something better with better object. Thus, you could learn to make better objects. Wonderful!

Question was where to go though. Deeper into the ocean or topside once again? Topside yielded more common items while the ocean gave you greater mobility and rarer materials at the cost of quantity. Sunken ships were unfortunately not as plentiful as mere trees and stone.