The first week I mainly spent diving (Mia and Neil are professional recreational divers @ AquaMarina divecenter in Las Americas). Tenerife is really a underrated diveparadise, there are so many exciting diving divesites and marine life, one could go on for ages...
The second week I spent mainly in Santa Cruz, the capitol of Tenerife - a very nice spanish-like small town with more or less no tourists - and, to my great joy, Monarchs migrated all the way from the Americas: