Here's the Imgur Album, with images posted in mostly chronological order (upon creation...except the last few which I forgot about and added last), but I figured I'd properly sort images here, in chronological order with respect to the story, so here goes:
(Cartoon art of Pryce reading to Fathom, by Rackiera)
(Pryce being sleep-deprived, by Nirvanacuga)
(Pryce lending Fathom his chronometer, by me)
(Fortitude sorta-restraining Devotion, by Rackiera)
(Fathom helping Pryce use the sextant)
(The dangers of carelessly using language around a dragon, by Rackiera)
(Celeste sharpening her talons)
(Fatal struggle, by Bloov)
(Tipping point, by Rackiera)
(Another artwork of Kerak, by Rackiera)
(Helsha's backstory, by Rackiera!)
(Everyone, by Rackiera! These humans are smaller than most IRL ones.)
Okay, now here's "non-canon" art sorted by artist:
(First drawing of Fathom!)
(Fixed version, but still old design)
(Old designs of the first quartet!)
(Emotes by Rackiera!)
(Valentine's art by Rackiera!)
(Iakahn, character and art by Rackiera!)
(Another piece of art by Rackiera!)
(Updated dragon template by Rackiera)
Unlawfully taken from NovelHub, this story should be reported if seen on Amazon.
(Patterns as they appear to another dragon)
(A basking Helsha and a helpful bird who's picking bugs out from under his scales)
(If Pryce had the maturity of a 9-year-old, by Rackiera)
(Hatchling Celeste bothering her father)
(A dragon rubbing their eyes with their wing-thumb)
(Human colors are boring)
(She's talking about horns)
(Tongs. No, I will not elaborate.)
(This is why I didn't give dragons hose-like lips) Thɪs chapter is updated by novelFɪre.net
(Drawn in response to me saying that eyeballs are pretty similarly sized across animals, so dragons would have comparatively tiny eyes. This was before the rewrite.)
(Fathom giving a double thumbs-up, by Rackiera)
(Ketan and Kerak meeting a Falian and their baby from Mekanip's "A Chronicle of Lies")
(Dragonriding selfie)
(Fathom smiling(?), by me)
(Another meme. [Pryce's head is poking out from between the wings])
(Fathom and hatchling Celeste, who is playing with a spore pod.)
(A poorly drawn Pryce getting SImba's by a poorly drawn Fathom)
(Fathom being uncertain over which thumb to use for a thumbs-up - the lower quality version of the sticker Rackiera drew)
(Vosae being sign-shamed)
(A close-up of Helsha inspecting a bird)
(Fathom has a surprise meeting with one of Rackiera's OCs, Areikzar)
And another meme! This one of a baby Celeste or Fathom. Dragon hatchlings look rather similar.
And one last one, by Mekanip: