S2, E7: Kaiko finds a strange crack in the seafloor while exploring. She’s amazed to find it leads to a vast cavern and a strange, ancient temple hidden in the gloom below. As she reports back to the Aronnax however, Will hears her scream “The statues! They’re alive!” before her radio cuts out. Will, Ant and Fontaine launch a rescue mission. The crack is so small they can’t swim in with Knights, so they enter wearing only rebreathers and wetsuits. Ant sees two large statues guarding the temple’s entrance. An ancient inscription warns them to “beware the sentinels”. But Ant is sceptical. After all, they’re made of stone; they can’t move. What can they do? However, as the sun rises further and shines through the crack above, the skin on the statues seems to ripple and come alive! It seems the statues are covered with deadly, poisonous stone-fish—and they’re determined to protect their environment! The Nektons retreat to the temple where they find Kaiko hiding too. There seems to be no way out past the fish. What’s more, they find the temple is actually a tomb. Ant hopes that’s not an omen! Will is desperately ill from a stone-fish sting and things are looking grim until Jeffrey arrives! But how did he get past the stone-fish outside? Ant discovers that Jeffrey used a different entrance and follows him out again. But as Ant races to the surface, the stone-fish chase him. He barely makes it to the Aronnax intact! Using it to block the sun from the cavern, he manages to get the stone-fish to swarm back to the statues to sleep. The Nektons escape, leaving a warning there for other unwary travellers.