Must Be The Sea-son

Mask, check.
Fins, check.
Wet suit, check.
BCD, check.
Regulator, check.
Gloves, check.
Tank banger, check.
Torch lights, check.
Knife, check.
Dive computer, check.
Dive log, check.
Flight ticket to Sipadan, check (well, Tawau actually, if we want to get into technicalities).

Apologies in advance if I can't reply your sms or return your call instantly.