Male beach crab regularly in Saudi city (5)
I believe the answer is:
mecca
'saudi city' is the definition.
(I've seen this in another clue)
'male beach crab regularly' is the wordplay.
'male' becomes 'm' (common abbreviation).
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'beach'+'crab'='beachcrab'
The alternate letters of 'beachcrab' are 'ecca'.
'm'+'ecca'='MECCA'
'in' is the link.
(Other definitions for mecca that I've seen before include "Pilgrim's destination" , "place for pilgrims" , "Holiest city of 13 Across, place of annual pilgrimage" , "hallowed ground" , "Pilgrimage site" .)