Sig naturally knew that the "other two" people the Sea King were referring to who heard them were Roger and Oden —though it was said to be "not long ago," it was still ten years ago.
These colossal Sea King, whose lifespans are unknown, are only "not long ago" to them.
However, judging from their current understanding, it seems that Roger and Oden didn't actually understand it at the time; they only recognized it as some kind of language.
So, the ability to "Voice of All Things" is indeed not an extension of hearing, but rather an ability to receive information!
Sig also recalled that in the original work, Roger did not show any sign of understanding— the Sea King were muttering about "a king being born," but Roger only learned about the "Sea King" after Oden deciphered the Poneglyph of Fish-Man Island.
As for a similar incident in the original work, where Luffy and Momonosuke were on Zunesha's back and heard Zunesha voice, Luffy was simply annoyed by the noise, and Zunesha's meaning was entirely translated by Momonosuke. Moreover, only Momonosuke had the ability to communicate with Zunesha.
However, since this part of the story takes place after the Dressrosa Arc, Sig only knows some information about it and doesn't fully understand it; otherwise, he might have thought of something...
Just then, the sea, which had been calm due to the lack of wind, suddenly began to ripple, growing larger and larger without any pattern, as if some kind of underwater creature was gathering.
Morio exclaimed urgently, "Oh no! Sea King are gathering here! Yasopp!"
"Wait... we haven't found anything yet." Yasopp closed his eyes, slightly panicked.
His Observation Haki is the strongest in the Red-Hair Pirates when it comes to long-range detection, but right now... he hasn't detected any trace of Sea King!
This, however, made Yasopp uneasy—if they were still outside his detection range, then... just how large a Sea King were gathering to cause such a commotion from such a distance?
"Oh no!" Yasopp's eyes widened suddenly.
"What exactly happened?" Morio looked around in surprise at the turbulent sea.
It resembled the Grand Line amidst a storm, yet... beyond the surface, there wasn't a single ripple!
He and Lucky Roo didn't have such a strong reaction when they encountered a large number of Sea King before.
Sig's face lit up with joy as he exclaimed, "They're here!"
The sounds of these colossal Sea King could travel over a very wide area; they were actually quite far from Sig at first.
They don't usually stay in the same place, but their voices can travel across the ocean, allowing them to "chat" from a distance. Otherwise, if they huddled together, it would be difficult for them to find food.
In reality, their range of activity is quite limited—the deepest part of the world's oceans is basically Fish-Man Island, located at a depth of about 10,000 meters.
The average depth of the entire ocean is only four to five thousand meters...
For these Giant Sea Kings, an average depth is necessary to ensure they won't get stranded in any position—although Sea King won't die if they get stranded, they'll still get very tired if they're out of the water for too long.
As for swimming comfortably, it can only be done in deep-sea areas, such as near Fish-Man Island, the Calm Belt, and so on.
Without needing to ask Yasopp, Morio could vaguely see, in the moonlight, a giant wave sweeping in from afar.
Bananaman had transformed back into a salamander and clung tightly to Sig's shoulder. The small boat "flew" up on the crest of a wave, but instead of falling with the giant wave, it remained suspended in mid-air.
Morio froze for a moment before realizing—this, this is...above the head of Sea King standing upright?
But this Sea King is huge!
The part above the sea level alone resembles a majestic mountain peak. Looking into the distance, it's like standing on a mountaintop thousands of meters above sea level looking down at the flat land!
And there's more than one of these massive Sea King; there are four more, and they've already emerged from the water, their heads alone comparable to a small island.
In addition, there were two enormous dark shadows, swimming beneath the surface of the sea...
The sheer size and the overwhelming sense of oppression left Morio and Yasopp speechless.
"At least... it's easy to aim," Yasopp words was ambiguous.
"[Who are you?]" A Sea King looked like a giant, plucked bird stretched its neck, which was very long to it but seemed like Pillars of Heaven to Sig, out of the water and asked Sig.
As expected, what was emitted was not a sound signal, but a way that Sig could not understand but could "hear".
The seven colossal Sea King surrounding them were all quite diverse in appearance—the one in front of them resembled a bird, but without feathers, and its wings were "degenerate" into something like fins; some looked like land creatures, but their legs were somewhat "degenerate"; others resembled amphibians, without scales and with smooth bodies; and of course, some looked like fish...
If there's anything they have in common, it's that they're all "ugly," as if they were just randomly born for fun.
"Me? I am... a man who will definitely become the 'Sea King'!" Sig said "honestly" in an attempt to get closer to her.
Sig wasn't lying.
The Sailor Pathway corresponds to Sequence 3, which is "Sea King"—possessing the ability to control the sea, unleash tsunamis at will, and command all marine life!
In all calculations, it would be far more effective than the "Ancient Weapon" that the Mermaid Princess supposedly possessed.
As for why Sig dared to act so recklessly in front of these powerful figures, it wasn't entirely based on the original story; rather, it was because his Observation Haki was constantly observing him...
These Sea King, with their haphazardly long bodies, cannot be judged by micro-expressions. However, thanks to their special Observation Haki, they don't need external judgment; they can sense things directly!
The emotions of colossal Sea King differ from those of Sea King —ordinary Sea King's emotions are mostly like those of wild beasts, either irritable or docile, driven solely by instinct, and mostly irritable.
However, these seven colossal Sea King are as calm as their weight. Although their size is imposing, they are actually not only rational but also not easily angered.
[Sea King? No, you're not.] A colossal Sea King of an amphibian like a frog, is releasing information beneath the surface of the sea.
[That's right, our queen is the Mermaid Princess.] The Sea King, who looked like a zebra that had degenerated, slowly corrected Sig.
"No, I'm determined to be the Sea King!" Sig declared with great ambition.
Morio and Yasopp had absolutely no idea what was wrong with Sig...
They heard nothing, only saw Sig talking to himself in front of these behemoths, and...
They all know "One Piece," but what is "One Piece Sea King"? And why does Sig seem to be able to communicate with Sea King?