A Lobsters blood is colorless but when exposed to oxygen it turns Blue
Lobsters grow by molting. This is the process in which they struggle out of their old shells while simultaneously absorbing water which expands their body size.
This molting, or shell-shedding, occurs about 25 times in the first 5-7 years of life. Following this cycle, the lobster will weigh approximately one pound and reach minimum legal size.
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