"When Kurt Austin and Joe Zavala investigate a mass stranding of aquatic life in the Indian Ocean, they accidentally uncover a much deeper mystery. A strange figure soon steals NUMA's findings, forcing a high-speed chase--someone really didn't want them examining those dead whales. But who, and why? A cryptic text through the NUMA satellite network makes things still stranger: These odd phrases and numbers look like NUMA codes. But who could be tantalizing...

"When Ceph, a squid-like scientist, discovers proof of the ocean's slowing currents, she makes the dangerous ascent from her deep-sea civilization to the uncharted surface above. Out of her depths and helpless in her symbiotic mech suit, Ceph relies on Iliokai, a seal-folk storyteller, who sings evidence of clogged currents as she surfs the time gyres throughout the lonely blue. Navigating the perils of their damaged ocean environment, and seemingly...

This cumulative rhyme portrays the ocean's intricate food web, with each verse introducing another hungry creature, from the tiny plankton up to a grateful family of humans.

The RBI team investigates claims of a human creature living underwater, and discover a city buried under the water and protected by schools of sharks.