In this case I use the Ultimo Magento theme from Infortis. But the way I
moved it will work in any Magento 2 theme.

The Ultimo theme already has it’s own catalog_product_view.xml.
If your theme does not you need to create your own.

Magento 2 - Move "More Information" below main description

In this new xml file you can add the following code;

<?xml version=”1.0″?>
<page xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”
xsi:noNamespaceSchemaLocation=”urn:magento:framework:View/Layout/etc/page_configuration.xsd”>
<body>
<move element=”product.attributes” destination=”content”
after=”-“/>
</body>
</page>

This will move the
additional data
from the More information tab to the end of
the content. You can add your own destination to get it where
you want.

magento2-more-information-below-description