A Challenge from the Deep Sea (深海からの挑戦, Shinkai karano ChōsenFireman.) is the 9th episode of
Explosion of undersea volcano awakened carnivorous dinosaurs Nerogiras. Savage Nerogiras closer to Japan, while the monster Kuiarashi other, in search of food. SR-type deep-sea research boat ride Tadokoro Dr. towards the study also vanished. Is a teacher, to know the behavior of Nerogirasu from the report left by Dr., Cape tries to avenge Dr. met in loco parentis was lured to mine source Nerogirasu by flowing voice speakers.
- Gudon appears on an island and battled Nerogiras. Gudon's carcass was later seen floating on the ocean with half of its body's bones exposed, so the space kaiju must have fed on it.