Welcome, Megalodon Sebastian.
As soon as Old Mak gave his consent, the pitch-black wall before them seemed to disintegrate out of the water, wiping away all traces of it in the process and granting Sebastian the opportunity to look inside.
When he looked, he was surprised as compared to the other parts of the cave that were brightly illuminated, this place was all dark.
Despite him hating darkness back on earth, he didn't feel any animosity from the cave so he relaxed and followed Tungsten in alongside Verni.
Of course, he felt a strong urge to activate his electroreceptor skill to check it out himself and understand everything but he stopped himself.
Thinking of the fact that not only him but virtually every shark in this cave had the same electroreceptors, perhaps him using it in the most important segment of the cave may seem rude.