This is a photo that comes with a story. There’s a place where I often snorkel that is home to a large group of barracudas. Most of these barracudas are around a foot and a half in length, though a few are much larger than that. I’ve mentioned before how barracudas give me the willies. They have not attacked anyone in Hawaiian waters to my knowledge, but they just have a certain look about them.

On this day I had passed the barracudas’ territory closer to the shore than I usually do. I didn’t see a single one of them. On my return, I swam farther out and, at one point, saw this barracuda and a second one (the jaw of which can just be seen in the photo) coming toward me. This was a bit unnerving but they slid by to one side, which is when I took this photo.

I turned my head and saw them curl around behind me. This wasn’t unusual; I’ve often had barracudas track me as I pass. Then I noticed a couple more arrive. This was less reassuring. I kept swimming steadily because I didn’t really have any other options. There was no way I was going to outrun them. Pretty much everything in the ocean moves faster than me and that probably includes some snails and sea cucumbers. Equally, I didn’t feel like turning to face them because the possible results of doing that included some I didn’t much like.

It seemed like every time I turned my head to see where they were, another barracuda had joined the pack. There must have been eight or nine of them at one point. Luckily, I didn’t see any of the very large barracudas among them, as that would definitely have made me even more nervous.

After a while I reached a rocky islet, a place where I usually first encounter the barracudas. They were all still behind me when I got there, but soon after I passed they were gone. While I’ve seen them in many different areas, this spot does seem to mark some edge to the territory of the main group.

I swam on, looking behind from time to time, and feeling more relaxed each time I did so. At least until I looked ahead one time and saw one of the huge barracudas heading right at me. It too passed by and I didn’t see it again, but it was time for me to get out of the water.

I saw this group of fish one day when water conditions weren’t very good, so I was happy to get a photo as decent as this. What caught my attention were the blue stripes, pointed front with underslung jaw, and forked tail.

It was a bit tricky to identify as most photos I found, including my fish book, John P. Hoover’s The Ultimate Guide to Hawaiian Reef Fishes, Sea Turtles, Dolphins, Whales, and Seals, show only shoals of Heller’s barracudas.

Heller’s barracudas are related to great barracudas but aren’t dangerous. They hunt by night and move inshore to rest in groups like this one by day.

Great barracudas are a fish I see every once in a while when I’m snorkeling. They’re generally about two feet long, with a somewhat menacing look, and a languid swimming style. They tend to keep their distance, easing away until they melt into the distance, which is fine with me since they’ve been known to attack humans.

Recently, I was snorkeling at a regular spot and approaching a shallower area where I usually find a variety of reef fish. I spotted the fish above from quite a distance. It was hanging motionless in the water. As I closed in I could see that this barracuda was huge, twice the size of any I’d seen previously in both length and girth.

I wanted to get closer for a photo, but I was also wary. Previous barracudas that I’d seen had looked capable of inflicting a nasty bite. This one looked like it could remove a limb. I snapped a few photos as the fish drifted out toward deeper water. Then it swished its tail and vanished at warp speed.

John Hoover says that great barracudas “grow to about 5½ feet, but are usually half this size in Hawaii.” I’d estimate this one was around four feet long, so a big one for these waters. (The yellow tang just behind it is probably six to eight inches long.) He also notes that “large individuals tend to increase in girth rather than length,” which was certainly true in this case.

In my attempts to identify what I see in the water, I use John P. Hoover’s book The Ultimate Guide to Hawaiian Reef Fishes, Sea Turtles, Dolphins, Whales, and Seals. His website is hawaiisfishes.com.