Yes, land animals. I think it's pretty clear that the story is about a global flood.In the Torah version they speak of the flood covering the entire "land" were ZNoah and his people lived... and he gathered all the animals of "the land"...
Gen 6:7 - God regrets making all these jerk humans and will destroy them. Definitely not a "humans are cool, but this tribe sucks".
And the Lord said, I will destroy man whom I have created from the face of the earth; both man, and beast, and the creeping thing, and the fowls of the air; for it repenteth me that I have made them.
Gen 6:17 - Flooding the Earth, everything in the Earth will die. Not local.
I, do bring a flood of waters upon the earth, to destroy all flesh, wherein is the breath of life, from under heaven; and *every thing that is in the earth shall die*