Please list Captain Nemo's deeds and tell me what kind of person you think Captain Nemo is.

Captain Nemo is a fighter against oppression. This image is the embodiment of Verne's progressive thought against colonialism, slavery and oppressors.

He is romantic and mysterious, loves freedom and is lonely. Nemo built a submarine according to his own design and dived into the seabed for large-scale scientific research, but it seems that this is not the only purpose of his lonely life. He avoided enemies and persecutors, sought freedom at the bottom of the sea, and felt deep sorrow for his lonely life. Pierre Aronnax thinks that Nemo has two points worth noting: one is his unparalleled courage, and the other is his spirit of sacrifice for mankind. It seems that this eccentric man has not completely broken the absolute human love. Nemo is also very kind. He doesn't agree to harm the kind and harmless fin whale. When a cruel whale attacked a fin whale at sea, Captain Nemo decided to rescue it. The nautilus used its steel horn to go straight through the whale. After a fierce battle, the sea was full of dead whales. After crossing the Antarctic, the submarine experienced dangers such as iceberg road closure and octopus attack. It was Captain Nemo who led the crew to overcome the difficulties with amazing calmness and perseverance.