Melis Nemid is treading in dangerous waters--and she's about to be dragged under. As a marine researcher, Melis knows all too well the dangers that can lurk under even the calmest surfaces. But not even she can guess how deep the darkness runs. Only one oceanographer ever came close to discovering the deadly mystery that lies beneath the sea--and he seems to have disappeared from the face of the earth. Now Melis is the last one who knows the truth....

Goblins shatter the enchanted conch shell. The Ocean Fairies must find the pieces and their animal friends!

After their parents are declared dead, Leo and his brother Hollis are taken in by a wealthy but distant step-uncle, and when, on his thirteenth birthday, Leo acquires the ability to hear sounds from the past when touching certain objects, he tries to use the skill to rescue a dolphin, whatever the cost.

Racing to bring the magic crystals to the Coral Kingdom, the six young mermaids discover a dolphin trapped in a fisherman's net, thanks to the evil Mantora, and Sophie, the fastest swimmer, rushes off to find help.

The unexpected appearance of a dolphin in her backyard creek helps a sixth-grader with cystic fibrosis learn to write her own story.

Since her mother died, twelve-year-old Lily has struggled to care for her severely autistic half-brother, Adam, in their Miami home, but she is frustrated and angry because her oncologist step-father, Don, expects her to devote her time to Adam, and is unwilling to admit that Adam needs professional help--but when Adam bonds with a young dolphin with cancer Lily is confronted with another dilemma: her family or the dolphin's freedom.

A second prophesy, this time involving dolphins, comes true for eleven-year-old Martine, an orphaned South African girl who has mystical powers over animals, when she embarks on a school trip to study marine life off the coast of Mozambique.

When Streaker -- the first starship designed and crewed by dolphins -- discovers a derelict ancient armada with evidence of the first sentient species ever, she sets off a war between dozens of galactic races eager to use the information for their own advancement. Trapped on a hostile planet while six alien fleets battle to decide their fate, Streaker's crew seeks some way to escape and return to Earth.

When Annie spots a dolphin trapped in fishing line in the cove near her house, she rushes to free him. Everyone cheers when she returns to shore, but only Annie knows that she and the dolphin have forged a special bond. He's become her friend--and keeps returning to the cove to visit and play. Meanwhile, out of the water, nothing is going right. Annie's best friend, Emma, has changed, and keeps ditching her to hand out with snobby Morgan. At home,...

Layla and the Bots visit the Surfside Rescue Center, where they meet a dolphin named Splash, who will only eat when the music is playing, but is very picky about the music--so Layla and the Bots build a machine that uses the sound waves Splash communicates with to change the music.