Great Migrations

Great herds of zebra thundering across the African plain…fragile butterflies traveling unbelievable distances…family groups of whales coursing through the waves. Many kinds of animals make annual migrations, and their stories reveal incredible strength and will to survive. These treks are magnificently documented in Great Migrations, the children’s illustrated companion to the upcoming 7-hour National Geographic television special of the same name.
Created for the huge audience of young animal lovers—and for the nation’s schools, where migration is taught as part of the core curriculum—this book spotlights wild creatures of highest interest to children. Action-filled photo spreads deliver immense "wow" appeal as animals vault over obstacles and escape the clutches of predators. Info-graphic spreads pack in the fascinating facts, with at-a-glance information on where, why, and how animals migrate.
Throughout the coverage, this timely book addresses the effect of climate change on animal migration—a story that is just now reaching the public, from scientists and other experts who have witnessed alarming trends.

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