The Internal Sea: Mare Internum
by Der-Shing Helmer · illustrated by Der-Shing Helmer
From $17.69 / copy at 25+ copies; lower per-copy prices at higher quantities (see Volume pricing) As low as $14.70 at 1,000+
Total $442.25
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BookPal × TalezoThe Internal Sea
Life on Mars…
No man is an island entire of itself, but Dr. Michael Fisher, a disgraced planetary geologist living on Mars, has never felt more isolated. The situation worsens when both he and Dr. Bex Egunsola, the station's newest biologist, accidentally break through the floor of an unstable lava tube into an ancient subterranean world... and they are not alone.
Is this purgatorial abyss a prison or a sanctuary? Genuine or constructed? How thin runs the line between life and death? And is there a chance for the fallen to return to the world of the living?
For fans of: Terra Formars (Yu Sasuga), The Weatherman (Jody LeHeup/Nathan Fox), The Space Between (Corinna Bechko/Danny Luckert), DUNE: House Astreides, The Martian Chronicles (Ray Bradbury), Sentient, Mars, Inc. (Ben Bova), The Strange (Nathan Ballingrud), Doom 3: Worlds on Fire (Matthew Costello), The MARS Trilogy (Kim Stanley Robinson), The Expanse, The Martian, Journey to the Center of the Earth, Red Rising , 2001: A Space Odyssey, Ghosts of Mars, The Expanse, The Martian, Scavengers Reign, Red Planet, and The Haunting of Hill House.
Written, illustrated, colored, and lettered by Eisner-nominated and critically-acclaimed writer/artist/editor Der-shing Helmer, The Internal Sea: Mare Internum, was an acclaimed webcomic that ran 2015-2019.
Details
- Publisher
- Vault Comics
- Author
- Der-Shing Helmer
- Format
- Paperback
- Published
- Sep 9, 2025
- ISBN-13
- 9781638492979
- ISBN-10
- 1638492972
- Pages
- 320
- Illustrator
- Der-Shing Helmer
- Carton quantity
- 23 copies
The Internal Sea for groups: pricing
Volume pricing applies automatically in your cart. No codes, no account needed.
| Copies | Price per copy | You save |
|---|---|---|
| 25 – 99 | $17.69 | 41% off list |
| 100 – 249 | $16.79 | 44% off list |
| 250 – 499 | $15.89 | 47% off list |
| 500 – 999 | $15.29 | 49% off list |
| 1,000+ | $14.70 | 51% off list |
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BookPal sells The Internal Sea in quantity. At 100 copies the price is $16.79 a copy, against a list price of $29.99, and the cart applies the volume tier automatically. Free shipping on most orders over $95 in the contiguous US. A specialist can quote a larger or mixed order.
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What does The Internal Sea cost when I buy for a group?
Volume pricing applies automatically in your cart, with no code needed. Price per copy: 25 to 99 copies, $17.69 (41% off list); 100 to 249 copies, $16.79 (44% off list); 250 to 499 copies, $15.89 (47% off list); 500 to 999 copies, $15.29 (49% off list); 1,000+ copies, $14.70 (51% off list). Need a different quantity, or a quote to forward for approval? Ask a specialist and we will confirm pricing before you pay.
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