I know being solo makes it more difficult, but it's my only option currently if I want to go during times that work for my schedule. I don't have friends who scuba (at least not anywhere near me), nor do I have a significant other (who either scubas or doesn't). Solo traveling usually isn't an issue but since I need a buddy to scuba it is presenting extra challenges. Before I got certified, I had been thinking of traveling to Europe in Jan, but now that I'm certified I want to dive while I vacation as well.
One of the things I really wanted to see were sharks so was hoping to go somewhere where I could see these along with other sea life (less interested in wrecks).
For Curacao, I was looking at staying at the Hilton which has a dive center on site (Caribbean Sea Sports). For the Bahamas, still wasn't entirely sure where I would stay (just started looking there). Haven't looked into Caymans yet. I did look briefing at Cabo San Lucas, but wasn't sure about there either. Haven't looked into Roatan yet.
The
Scuba Board Curacao Surge week in Jan. 2019 might be doable though it goes until the 19th which puts it real close to when work starts again (Jan. 21st). So I'm not sure I want to travel so close to when I need to go back to work. I'd rather travel earlier in Jan but after the holidays.
You haven't mentioned budget, but January is the high season in many tropical regions and most dive resort and liveaboard prices are quoted for double occupancy - so there will often be an upcharge for single occupancy. Some resorts will periodically offer specials for single occupancy but usually during the slow seasons, not January. Resorts and flights book up early during the winter so that may also reduce availability.
If budget is an issue of concern, take a look at the "Buy One Get One Free" all-inclusive special at Anthony's Key Resort on Roatan - which I believe works out the same as no extra charge for single occupancy.
We've been to Roatan and enjoyed it a lot, but I don't think that you will see a lot of sharks there. We have never stayed at AKR so I can't offer an opinion but you will be able to find reviews on SB and other online sites.
I think that some of the cheaper rooms at AKR don't have air-conditioning, but the sand fleas and mosquitoes can get very bad on Roatan if the wind drops - so I wouldn't get a room without AC. Be aware that there is a 19% tax added on to the price quotes and that flights to Roatan can be limited and pricey.
Buy One Get on Free Roatan Vacation Packages | Anthony's Key Resort
Below is a link for a site called SingleDivers.com; it is NOT a dating site - it offers trips for divers that want to travel but don't have buddies. My husband is a diver so I've never used this site, but you could check it out:
SingleDivers.com - Home
You might also check out your local dive shops and scuba clubs to see if any of them are offering trips in early January, it would be a great way to meet other divers and perhaps find buddies for future trips. But if you could manage the SB Curacao Surge, that sounds like a great option, even if the dates are a little tight:
ScubaBoard SURGE Central 2019 Curacao
Another option to avoid the "double occupancy" issue is to rent an apartment or condo at your destination and make separate arrangements with a dive op that will pair you up with a buddy or a divemaster for boat dives. Bonaire and Cozumel come to mind as good options for that type of arrangement - but I personally don't think that either of them are a great choice for a new, inexperienced diver.
Cozumel is all drift diving and although some people do great with that right away, others (like me) have to gain experience with buoyancy control and drift diving before heading to Cozumel - at least that's my opinion.
And Bonaire is great diving but not many sharks though (and you won't see a lot of sharks in Curacao either) but it's not a good place for a new diver IMO, because it is mostly shore diving in remote areas and it would be best if you were traveling with a buddy.
I understand that you are interested in the Bahamas because of the shark diving, but the water is cold in January and the reefs are "just okay" IMO, although you will probably see a lot of fish and sharks. We once went to Nassau for a dive trip in March and I was freezing in the water. I prefer diving in Florida or the Bahamas in the summer or fall for the warmer water - during hurricane season!
You are likely to have more trips in your future, so I am sure that you will be able to go diving with sharks another time.
We love the Caymans, but generally speaking the Caymans (and the Bahamas and many other tropical destinations) can be very expensive during January and the resorts tend to book up quickly, but at least there are usually a lot of flight options from the East Coast to Grand Cayman at decent prices.
The Clearly Cayman groups offers small, all-inclusive, diver-dedicated resorts on each of the 3 Cayman islands and they have extended their "25th Anniversary Sale" through January 19, 2019 - and it's a good deal - and the quoted prices include taxes,hotel service charges, and airport transfers, but not dive shop tips or alcoholic beverages. You can add-on a beverage package if you wish.
I don't know if they have any spaces left at any of their resorts, and there will probably be an upcharge for single occupancy, but check out the links below. You are likely to see some nurse sharks and gray reef sharks in the Caymans, but not a bunch of them.
Clearly Cayman Resorts, 25th Anniversary All-inclusive Specials:
Cayman Brac:
https://www.caymanbracbeachresort.com/dive-packages/25th-anniversary-special/
Little Cayman:
https://www.littlecayman.com/dive-packages/25th-anniversary-special/
Grand Cayman:
https://www.cobaltcoast.com/grand-cayman-dive-packages/25th-anniversary-special/
The East End of Grand Cayman is often the best area in the Caymans to see sharks, so also check out the Compass Point resort and Ocean Frontiers dive op; but transfers aren't included and the East End is a long trip from the airport so you would probably need to rent a car.
Compass Point Dive Resort in the Cayman Islands
Good luck and let us know what you decide to do!