The two R-types dived ahead of Shiro, capable of cutting through the currents better than he could. They were smaller and had way less drag, though the occasional current did batter them around. They reached the lake floor first and began to scan the ground for weapons, specifically daggers. That's when Ebon realized he was missing an important bit of information: He didn't know what Sapphire's daggers looked like. He assumed there would only be one set, but there were many weapons down here. A lot of daggers, some in pairs, others scattered about. Any of these could be the weapons Shiro was looking for.

Back at the surface Ebon also had the displeasure of listening to Gren talk. He was tempted to jump into the lack to stop listening to his drivel. However before he debated if he should take a dive into the lake himself Ebon turned towards Sapphire. It was her daggers he was looking for and he needed to know what they looked like. So letting his R-Types sit at the bottom of the lake for a moment, Ebon switched his concentration from them to Sapphire. 

Reading one's thought was easy enough, but digging through memories was more difficult. Ebon needed to have eyesight on the target and focus. If they aren't moving it'll be easier. It looked suspicious for Ebon to be glaring at Sapphire so intently, but fortunately the pig faunas seemed to be distracting her. It took Ebon a few minutes before he was able to get an idea of what Sapphire's daggers looked like: White, can take dust cartridge, and has a pointy crossguard. He thinks he might have seen a few daggers like those so Ebon turned his attention back towards the lake. His previous R-Types were too far away now, so he sent another two instead.

Now knowing what he's looking for Ebon had the Midnight Eye R-Type scan for daggers matching the description of Sapphire's dagger. There were a lot of false leads, things like bleached scrap metal or pieces of glass. There was some broken gun parts that might have been Sapphire's daggers, and every so often he did find an old knife, but none of them looked like what he was looking for. If he had to guess they might have been taken deeper into the lake, so Ebon had his R-Types move towards the deep end.