How many hearts does an octopus have?
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
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- When was a colossal squid first filmed?
“A colossal squid was filmed alive in the wild for the first time in 2025.”
Reference: Schmidt Ocean Institute
More from this shelf
When was a giant squid first filmed?
A live giant squid was photographed in the wild for the first time in 2004 and filmed in 2012.
Who invented pasteurization?
French scientist Louis Pasteur developed pasteurization in the 1860s, which kills harmful microbes by heating liquids like milk and wine.