Sorry Fawlty
Missed that one fin. If only the interdorsal fin was marked, then it is a Blackspot Shark. Here is some info. on the species.
A small, slender shark with a long, rounded snout, large, oval eyes, and oblique-cusped teeth; 2nd dorsal fin with conspicuous black tip covering one-half or more of the fin, other fins plain (Ref. 5578). Grayish or grey-brown above, white below; black spot on the second dorsal fin (Ref. 9997).
Found on the continental and insular shelves, from the surf line and intertidal region to deeper water (Ref. 244). Feeds on small bony fishes (including sea horses), prawns, and squid (Ref. 9997). Viviparous (Ref. 50449). Often caught by shore anglers (Ref. 5485). Utilized as a food fish (Ref. 244).