One unit of U-100 insulin is 0.01 ml in a regular syringe.
The only surviving fishes which do not have scales (and whose ancestors never had scales) are hagfish and the lampreys.
The passage about not eating shrimp is found in Leviticus 11:9-12. You shall regard them as detestable, you shall not eat any of their flesh, and you shall detest their carcasses. Everything in the waters that has not fins and scales is detestable to you.
So, there you have it. Gaara has become friends with the Tailed Beast that tormented him for years, and Shukaku is way less bloodthirsty than he used to be. Talk about progression, yeah? It seems like Gaara takes after Naruto in more way than fans thought.