OceanIndex.net
Title
OCEAN index to the best online content
Description
the content to which the link is made is serious and authoritative (it may be either an article, or an image seen in a reasonable degree of enlargement, with an explanatory caption and without a disfiguring watermark)
In general the preference will be for OCEAN links to sites with .ac, .edu, .net, .info, .org or .gov domain names.
However there is no objection in principle to linking to .com or co.uk sites and others of this kind, provided that they are open-access, meet the criteria listed above, and are not unduly disfigured by ads and offers