In The Time Machine, what was the only form of life that the Traveler found on the earth by the end of the journey?

When the Traveler finally brings the time machine to a stop, he finds that he's landed on a beach infested with giant crabs. Understandably, he doesn't want to hang around, so he gets back inside the machine and travels even further into the future, stopping every hundred years or so to see how the planet has changed.
Eventually, after thirty million years, he stops completely. As he walks along the beach, the only sign of life he can see is some lichen. As well as being very cold, it's also very dark, as a large black disc eclipses the sun. The Traveler thinks that perhaps some other planet, such as Mercury, has passed between the earth and the sun. After he climbs back into the time machine, the Traveler spots a gigantic black blob-like creature with tentacles, slipping over the horizon. It's the only form of animal life on earth that he can find.