Torte for the semi-aquatic mammal! (5)
I believe the answer is:
otter
'the semi-aquatic mammal' is the definition.
(I've seen this before)
'torte' is the wordplay.
'torte' anagrams to 'OTTER'.
However, I'm not clear how the anagram is indicated.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for otter that I've seen before include "Fish eater of the weasel family" , "Aquatic carnivore" , "Water mammal" , "fish-eater displayed" , "Fur possibly" .)