I'm not quite sure how Ronan and Mural can get through the day without having yet another adventure, or crises, but that's what we get in this book two of the Twins of Petaybee.
It starts off with Marmion, and the captain of her ship, Johnny, taking the twins, Ke-ola, and their otter friend, Sky, off planet to go and invite Ke-ola's family to come live on Petaybee with them.
When they arrive at the planet, they're shocked to see that the eco domes that his family lived in, had been smashed flat by a meteor storm, that was still hitting the planet.
They are immediately hailed by another ship, one belonging to Intergal, and warned away, but when Marmion explains that she has on board one of the children belonging to the planet, a Colonel Cally, in command of his ship, tells her that there were no survivors, and so she should leave.
But Ke-ola tells her of tunnels deep under the surface, caused by the giant roots of trees that had died, and that he was certain his family would have gone there to shelter from the meteor storm
When told of this, Cully very obviously doesn't want to believe it, but Marmion shames him into letting her ship land to search for survivors, while Cully says he will look elsewhere to see of any other people survived that way.
Marmion and her people do find Ke-ola's family, along with their remaining sacred Honu, the sea turtles they regard as family, and rescue them. They realise that Cully has left the planet without searching any further but, when the Honu tells Ke-ola that there are still people alive in a different area, they do their best to rescue them, too - only to find out that this group have sharks as their sacred animals!
After a lot of arguing, they, too, are rescued, and Marmion puts the sharks in a temporary sleep, so that they'll survive the journey without feeding.
Once they return to Petaybee, Ronan and Mural realise that the deep sea otters will need warning about the sharks, and go to do so.
Unfortunately, the sharks are let out into the sea a lot quicker than they were expected to and, because the deep sea otters were still being so secretive, it took the twins so long to get their attention to warn them, that one of them, the leader's son Jeel, had swum up to see what these new creatures were like!
Mural offers to go and warn Jeel, but his mother had argued so long with the twins, that Mural didn't get to him in time, and she saw the sharks attack, and kill him. His mother sees this too, and is so angry, that she keeps Ronan with her, and moves the whole ship from the volcanic vent it rested on, but the maelstrom that this caused in the sea caught Mural, and knocked her out.
In the meantime, there had been an. accident with the boats that held the shark's human family, as they go with the sharks, to release them into the sea and Yana, who had been with them, was doing her best to sort things out, and rescue everyone.
When Mural comes to, she manages, with the help of a pod of Orcas that she'd met with previously, to get back to tell her parents what had happened. Unfortunately, they were so busy rescuing others, that she decided that she'd look for Ronan herself.
She was told by some local seals, that a more northerly pack of seals had seen the craft with the deep sea otters land on another volcanic vent near to their fishing grounds, so Mural, and Sky the otter, decided to go rescue Ronan themselves, with their parents so busy.
When they eventually get to the area, they're so exhausted they rest on an ice floe, but the local seals there decide they want to eat Sky, and threaten Mural, unless she hands him over! Fortunately, the Orca pod hear her distress, and come scare the seals away.
In the meantime, back with Marmion and the rest of Ke-ola's rescued family, an Intergal ship arrives, and settles besides her own. She sees that it's Colonel Cully, but he brought along a squad of soldiers, arrested Marmion, all of her crew in the ship at the time, then took the rest of Ke-ola's family - the elderly and the children - with them, not allowing Marmion time to call for help.
A crew member of Marmion's managed to leave the bridge communications board open, so Johnny, who was helping in the rescues, heard what had happened, and let Yana know.
Mural, in the meantime, persuades the deep sea otters to release Ronan, just as their father, Sean, arrives nearby to the craft and, after being drawn into it, brings the twins home with him, to find that Marmion and all had been arrested, and that he, Yana, and all the major leaders in Petaybee are at risk of being arrested, too.
Because of the turbulence caused by the volcanic actions of Petaybee's island-making, communications were impossible but, as Yana needed to let Marmion's friends and colleagues know what had happened to her, and because none of the adults could travel off of Petaybee without serious risks of harm, the twins knew that they needed to do something about it.
They decide to go back to the deep sea otters, to ask them for help, and had just reached the sea, when it became very turbulent - and before they knew it, the deep sea otters appeared, telling them that their cousins, the sea otters, had told them that the twins needed their help.
After explaining to them all that had happened, the book ends with Ronan, Mural, and Sky the otter, going into the sea, and entering the deep sea otter's craft!
This was an enjoyable book, with lots of adventures - actually, a little too much, if I'm honest - enough to make me feel breathless at times! Lol