It looks like some sort of larva. The way that the larva moves is similar to that of a worm. It doesn’t appear to have limbs anywhere on its body, therefore it moves in a fashion that resembles a wave. The larva never looks to move inward into the container, rather it circles the container always remaining on the outer perimeter. Occasionally the larva looks up towards the lid of the container making a weak attempt to escape out of the lid. Sometimes the larva stops moving as if it has lost all energy to move forward. Other times it the larva stops and changes the direction it was going as if it has forgotten the which way it was going.
Comments
One improvement could be to
One improvement could be to write out any contractions- "does not," as opposed to "doesn't." Scientific writing should be more formal than how we talk.
First Comment
You could combine some of the sentences to make the paragraph flow better when read. For example, the first two sentences can be combined to say: It looks like some sort of larva, and it moves similarly to a worm. There are also some typos that are a quick fix if you read through.
The last sentence: "Other
The last sentence: "Other times it the larva stops and changes the direction it was going as if it has forgotten the which way it was going", should only include the pronoun it or the noun the larva instead of both.
Punctuation
"Other times it the larva stops and changes the direction it was going as if it has forgotten the which way it was going."
In all, everything seems good but you could use come commas in the above sentence. This will make it a lot easier to understand what message is being passed.
Introduction
One suggestion I have is adding more to the opening sentence. Maybe add after "it looks like some sort of larva" because...and then give one or a few reasons why and then further expand on those.