Lothar stands on the deck with his face toward the sun trying to keep warm. Shivering in his bear skin, he slowly opens his eyes, and casts Druidcraft to get weather, tide, moon phase. He scans the waters around the wreck looking for schools of fish, pods of whales, flocks of birds, octopus and lobsters. (it's something's home! Surely some animal is trying to find answers about the wreck.) Looking for any critter(s) that is showing intrest in what's going on in the wreck. 

Looking for a location to attract the critters too. Getting from his rations, edibles they would enjoy. With a handful of food and a soft voice calling "Psst, psst, psst " Lothar begins a ritual,  speak with animals

Lothar Male Tabaxi Druid  

[[ Is the shipwreck connected to a cave/cove of some sort? Just thinking of where to look next. ]]

[Sorry, I've been busy]

@Lothar, the druidcraft manifests as a golden orb that slowly morphs into a cloud. And strangely, there aren't even fish in these waters. 

@Vitus, no, but you have yet to explore the main deck or the hold. 

Startled by the sun like object, Lothar tries to manifest it again. Was it trying to tell him something. Clear and sunny then they hit a white squall? "Did you see that?"

No fish nearby, that is strange. Very unnatural, so what else is also here the tiny Tabaxi ponders. From behind Borvnir he continues to look for clues, feeling safe besides the carnivore.

Lothar Male Tabaxi Druid 

[Cats are carnivors]

Zin will explore the hold if no one objects…

Irtos comments, "I think we should stay close to each other. The undead are  much more dangerous when you don't have numbers on your side."

"Good thinking, lass." says Cherry to Irtos. She'll follow along with Zin to the hold.

Matching action to words, Irtos will also follow along.

Off to the hold of the ship then Zinzenzax leads the way hand tightly gripping his Morningstar.

Borvnir suddenly snaps out from his long prayer to Orcus (Religion Check: 18), his spirits now fully calmed from the battle. He then follows along with the rest of the party to explore the hold. 

[Forgot to say, the hold is almost completely submerged. Lmk if you want to change your actions]

[Im guessing since the hold is below deck, the water filling it comes up to a trapdoor entrance or similar?]

Borvnir looks into the submerged hold and throws in a heavy piece of debris like a rock into the water to see if there are any aquatic creatures within the sunken wreck. His next actions will depend on the result. 

Lothar follows Borvnir, climbing up his back to stay dry. Outside the hold, Lothar casts guidance on Borvnir. "Sorry, gonna need a ride for this"

Shivering, whether from cold or the fear of the unknown,  he watches the area behind Borvnir's back with his head darting around trying to make sense of each sound and light reflection. Holding his focus in his hand, he rolls the beads with his fingers to soothe himself.

Lothar Male Tabaxi Druid 

The heavily armored Irtos is not interested in taking a walk underwater. Since her armor weighs more than she does, actually swimming is not a possibility. But if someone does want to explore the hold, she'll try to be close enough to offer support with her magic.

Cherry grabs hold of her staff and looks at Lothar on Borvnir's back with a puzzled look. "Come on, there's worse things than a bit of water." She pauses, "I do wonder if undead morph if submerged for long enough."

As Zin approaches he will remove his armor set aside his backpack, he will only bring a hand axe.  “Well let’s find out what’s going on down there.”  Zeezee pokes his head out ‘squeak’, “Not this time little friend, too dangerous.”

Quote from VitusW >>

Cherry grabs hold of her staff and looks at Lothar on Borvnir's back with a puzzled look. "Come on, there's worse things than a bit of water." She pauses, "I do wonder if undead morph if submerged for long enough."

 Unfortunately, drowned are not a creature in d&d

Assuming Borvnir sees nothing in the hold react to the debris thrown in, he'll start wading into the water, feeling around with his feet (or tail if Rhino lets him have one) for anything that feels out of place or important, like a chest or something with a different texture to everything else. He murmurs to Lothar 'Don't worry, I ain't trying to get myself too wet either, you should be fine up there since I ain't divin' under any of this'

Lothar reaches down to touch the water. Whispering to the old ones, asking them to clarify the water in the hold. Druidcraft  'Please, Let the sediment fall? Let the air go flat? Let the water be still?"

Lothar Male Tabaxi Druid