"I do not see how traveling with me would alert the dragon.  As I said, she doesn't live there so she may not even be around.  We will swim under the sea not over it, she will not know we are there.  She is very old, older than I am and I have lived nearly 200 years." Angajuk answers.  "Do you see the boat on my back?  If you step onto it then when I submerge under the water a bubble forms over it and you can ride with me under the sea. Anga made it for me before he died.  As for the island of Solstice, I know the location of the Frostmaiden’s island.  Auril has a roc that lives there and I have had encounters with it.  It is also very dangerous but I am willing to travel there."

Having secured passage on Angajuk who is willing to take you where you need to go you can safely step onto the boat on the whale's back.  She then submerges under the water and sure enough, as he goes under the surface a bubble forms around you and you are dry and safe with breathable air.  Angajuk dives deep and the narwhals chase after her as she swims quickly through the depths of the Sea of Moving Ice.

You travel for a few hours and are able to comfortably rest during this time.  Eventually Angajuk lets you know that the ship is above you.  From what you can tell the ship is hundreds of feet from shore but there appear to be solid ice between the ship and shore.  Angajuk is willing to swim anywhere you need under the ice above.

Chill sits quietly tending the fire with Rhogar while the others speak to the whale.  When it is time to climb into the boat he's a bit hesitant, this seems very strange.  But he is willing to give it a go.  As the whale dips under the water and the bubble appears Chill can't help but speak.

"And when things start to happen, don’t worry. Don’t stew. Just go right along. You’ll start happening too. Oh! The Places You’ll Go! You’ll be on your way up! You’ll be seeing great sights! You’ll join the high fliers who soar to high heights. You won’t lag behind, because you’ll have the speed. You’ll pass the whole gang and you’ll soon take the lead. Wherever you fly, you’ll be best of the best. Wherever you go, you will top all the rest."

Kazri was thinking on riding on a ship that would sail above water, and she starts to get nervous when Angajuk said that he will take them underwater. When Chill starts speaking, she tries to understand what the Tabaxi is talking about, and she is distracted by him. Before she knows it, the ship is under the water. To Kazri’s amazement. 

"Underwater? Are we travelling underwater?" asks a surprised Krom as Angajuk informs them group of how the group will travel to their destination.
The dwarf then steps on the ship murmuring a prayer to Moradin.

As the Angajuk and the boat sails underwater, Krom tries, but fail to understand what Chill is trying to say. After a while, even if the circumstances are a bit strange for him, Krom manages to relax.

When Angajuk informs the group that they are near the ship, Krom chants an hymn of divination (Locate Object) focusing on the description of the Professor Orb. 
"I have completed the hymn that should allow us to locate the Orb. Even if I never seen it, I should be able to locate the nearest object that has similarities to the Orb, hopefully there are no many orbs around here." The dwarf pauses and says to Kazri "Standing to your divination, the Orb is not in the ship, but near the shore."
If the orb is outside the range of his hymn, Krom will ask to Angajuk to move closer to the shoreline.

Rhogar may have needed some things updated on some things having been sitting by Chill and his fire. But such things can be clarified during the trip as far as the Dragonborn's concerned, as he at least fails to question anything once given marching orders. The real task would be seeing to matters with Axe Beaks. But once they were settled in near the cabin and with plenty of food left for their extended stay, it is back to the whale for Rhogar swiftly after. And whereas Chill seemed hesitant, both Rhogar and Gorrah are more than eager to climb aboard and examine the interior, and throw at the occasional flattering comment.

Rhogar stops the absentminded commentary as Chill speaks, and just on curiously for a moment or two. "If I did not know any better, I would suspect that to the be beginings of a song. Feeling inspired then, perhaps?" He asked with a smile. Apart from any conversations held during the trip itself, the Dragonborn was content to just quietly marvel at the scenery that passes the group by no matter how static things may become after a time. 'So this is how it must feel for Brother Vixix... heh... simply magnificent' He thought at some point.

In the group arriving roughly at their destination, both of the draconic figures snap to attention at Krom's words. "Sounds like we will need to get close. Perhaps a, uh... coasting nearer to surface and shallows, mn? Eh, uhm..." Rhogar awkwardly gets close to the bubble's edge without piercing and asks the Whale, "Do you think you can do, Angajuk? Coast closer to the shallows? And, uh... I don't suppose you can breach through the ice without harming yourself, can you? We will assist of course if you think it possible or necessary."

(Funnily enough, this feels like one of the VERY few times the basic ranger's primordial awareness would've come in handy. lol!)

To Kazri’s surprise, Oli is perfectly fine with the new environment. He looks around at all the marine animals that pass by, and at the two narwhals that accompanied them for a little while. He even managed to take a nap after he got tired of the sightseeing.

You are caught a bit unawares that you would be travelling under water rather than over.  But even the axebeaks and Oli settle in with the rest of you.

Instructing Angajuk to get closer to shore Krom casts his spell to try and locate an orb.  A moment later he senses that an orb is only a few hundred feet west of their location on shore somewhere.

"I could breach the ice if you want but the noise may attract undo attention.  The dome is virtually indestructible, so there is no danger to you. Or I can find a place where there is open water and surface to allow you to look around." 

Rekuberk frowns a bit as he sees the wasted found, but shrugs it off as a dragon is mentioned. He cracks his neck at the though of finding another dragon but pauses as he remembers the one they though had been much smaller.

His mind wanders again as they begin riding on the whale, occasionally looking out over the water.

"I sense the orb" says Krom after finishing his hymn "We should avoid, if we can, unwanted attention." says the dwarf to the group before addressing Angajuk "My hymn will not last too long, could you try to find a place with open water near the shore?"

“I believe it would be more prudent to find the closest open water. I would like to vote for that option.” Says Kazri looking up to see if she can see any openings closer to the shore. (Kazri Perception: 16)

"I have my doubts that we shall be so lucky." Rhogar admits while staring up at their frozen ceiling. "But, it couldn't hurt to look around, I suppose." He added, dropping his gaze back on Kazri and Krom with a smirk, if only for the moment. But almost immediately after, they are back up again as Rhogar tried to work with Angajuk on spying a potential opening.

Chill cracks his knuckles.

"So the orb is somewhere relatively close to shore but not on the ship.  There may, or may not be, a dragon on the ship.  Do we really all need to go retrieve the orb? What if Angajuk gets us close and I alone go.  I can hide and move quickly on my own.  Drop me off on shore, I sneak over and grab the orb and then return.  I have a better chance of avoiding the dragon on my own.  It doesn't live here, it's not its lair.  Easy peasey."

"It is not that easy Chill, I'm the only one that can sense exactly where the orb is located." Krom says to Chill "Unfortunately, I cannot share with you the effects of the hymn."
"As you know, being sneaky, is not one of my skills. We will have to all go together."

"Sure,  but can't you tell me about how far in what direction to go?  How much can there be out there?   Kazri could see the dead woman and the orb.  How much could have charged in the last few days?  But ultimately if you all wish to come that is fine with me.   I just think the risk would be less if I went alone.   There is a ship of possible loot to consider also.  I'm good either way."

“Perhaps let Chill go first, and give him some time. If he is unsuccessful, we should join him.” Kazri says to the group. “Chill, do you have the other Sending Stone?” Kazri asks Chill.

"I can point you in the right direction Chill." says Krom "As for the distance, I know that it's within 1000ft from us since it's the limit of this hymn."
The dwarf pauses for a moment considering the situation and then says "If you do not find the orb, let us know and we will join you."
Krom then points to Chill into the right direction.

Unless there are further objections...

Angajuk is easily able to find a spot of open ice that allows him to surface long enough for Chill to disembark as Krom points him in the right direction.

Chill I need 2 Perception checks and 2 Stealth checks

"Gorrah shall join you as well, Chill. If for nothing else than to act as assistant." Rhogar added with a smile. "ANd of course, as an alternate means of communication as well." With that, the Psuedodragon fluttered over to the Tabaxi' shoulder, and would wait this time for him to open up the backpack for her to climb inside for at least a measure of comfort. Only her head remained poking out to stay true to the Dragonborn's words, if only to help play lookout for Big Dragons and shiny orbs.

Chill opens his cloak and let's Gorrah in.  "Alright but you stay there so we don't draw undo attention." He then slips the hood of his cloak on and as the whale surfaces briefly he jumps from the ship onto the ice and moves carefully in the direction Krom indicated.

Stealth 24 & 28

Perception 21 & 26

As Chill and Gorrah jump from the ship and move towards the orb, Krom murmurs a prayer to Moradin.
The dwarf then places his hand on the head of his warhammer waiting for any news, good or bad, from them.