How to Dive to the Deepest Place on Earth

"This book is perfect for those interested in science, exploration, and the extreme frontiers of our world." —School Library Journal (starred review)

Journey seven miles below the surface of the ocean in this thrilling moment-by-moment recounting of astronaut and oceanographer Kathryn Sullivan’s real-life deep dive to the “bottom of the world.” This book is brimming with STEM concepts and heart.

What is it like to visit the deepest place in the ocean? In childhood, Kathryn Sullivan was drawn to the blank spaces on the map. She boosted her passion for exploration with curiosity, hard work, and science education. Finally, she had the opportunity to study the depths of the Marianas Trench, a trip that would require a lot of study and precise preparations. Get the inside scoop on everything deep dive, from how submersibles are engineered to the nitty-gritty of planning an ocean-floor expedition. Travel with Sullivan in the submersible Limiting Factor into bright waters where dolphins and turtles glide; down to the murky twilight zone, home of lantern fish and deep-sea squid; down, down, to the opaque darkness that no sunlight penetrates . . . with three hours of descent still to go. Through science-rich text, colorful illustrations, and striking photographs, Kathryn Sullivan and author-illustrator Michael J. Rosen take young explorers on an astonishing journey to one of the most mysterious places on Earth.

Standard and Primary covers are widely available through general retailers. They often have higher print runs and can be cheaper, especially during sales.

In contrast, Direct Market (DM) and variant covers are primarily sold in comic shops. DM editions tend to have more limited availability and may be more valuable to collectors.

The main differences lie in artwork style, availability, price, and collector appeal. Ultimately, the choice between standard and variant covers depends on personal preference, budget, and individual collecting goals.

Comic book enthusiasts have various formats to choose from when collecting their favorite stories.
Here's a brief overview of the main types:

Omnibus

• Large, hardcover collections
• Usually contain complete runs or extensive story arcs
• Typically 800-1000+ pages
• Higher price point, often €100-€150

Oversized Hardcover (OHC)

• Similar dimensions to omnibus, but thinner
• Collect shorter runs or story arcs
• Usually 300-600 pages
• Priced between €30-€50

Hardcover (HC)

• Standard-sized hardcover books
• Collect 6-12 issues typically
• Similar dimensions to single issues, but with a hard cover
• Priced around €25-€35

Trade Paperback (TP)

• Softcover collections
• Standard comic book size
• Usually collect 4-6 issues
• Most affordable option, typically €15-€25

Other Formats

• Absolute Editions: Oversized, deluxe hardcovers (mainly DC Comics)
• Compendiums: Massive paperback collections
• Graphic Novels (OGN/GN): Original stories not previously released as single issues

The choice between these formats often depends on personal preference, budget, and collecting goals. Omnibus and OHC editions offer larger artwork and more content but at a higher price, while TPs provide a more affordable way to collect complete story arcs