Tag Archives: Eels

Whitemouth moray eel in a tight spot

Whitemouth moray eels can squeeze into the tightest spots on the reef and are often seen with just the head sticking out. They’re easy to identify with their bright white mouths, which they’re constantly opening and closing. While this activity looks somewhat menacing, they’re actually forcing water over their gills in order to breathe. That’s not to say that, if you waggle your finger in the face of an eel, it won’t bite it off so, as with most creatures in the water, it’s best to keep at a reasonable distance and be respectful of them.

Peacock groupers

Peacock groupers are easily identified by their iridescent blue spots and, in larger specimens, lighter vertical bars toward the tail. They tend to be skittish fish, diving for cover when anything approaches. But these two were in an area where fishing is prohibited and I’ve noticed that the fish in these areas have figured out they don’t have to worry about people in the water (probably a big mistake).

Another trait of peacock groupers is that they will often hunt with eels and octopuses. That’s what these two were doing on this day. On the right of the photo, the tail of the eel can be seen sticking out from whatever cranny the eel was disappearing into.

But the thing I like best about this photo is the fish just above the head of the top peacock grouper. Not much can be seen of it except for two white areas that look like a mischievous grin. I suspect that these white spots are the bill of a large parrotfish, but I was never able to get enough of a look to be sure.

Snowflake moray eel

Snowflake eel

This is an adult snowflake moray eel. Their distinctive markings make them one of the easier eels to identify. Unlike other eels, they don’t have sharp teeth, but pebble-like plates which they use to crush the shells of their invertebrate prey.

How long is a zebra moray eel?

Zebra Moray Eel

Zebra moray eels are one of the easiest eels to identify, their circular stripes differentiating them from any other eel. They feed mostly on crabs, which they crush with their blunt teeth.

These eels can grow to five feet in length, but are usually smaller. This one though is probably about as large as they get. The yellow tang near its head could be as long as six or seven inches, while the saddle wrasse at its tail tops out at ten inches. That would make this eel somewhere between four and five feet long. It’s certainly the biggest zebra moray that I’ve seen.

Whitemouth moray eel

Whitemouth Moray Eel

A smaller whitemouth moray eel displays the feature that gives them the name. An eel will typically open and close its mouth in this way, but it’s not an act of aggression. It’s how they breathe, the motion pumping water over the gills.

This pose, with much or most of the eel hidden in a crevasse or coral head, is also typical. It’s how I make most of my sightings. But every so often I’ll see an eel in open water or passing from one hiding spot to the next. It’s usually a fleeting sight as eels can zip along and disappear into the tiniest of cracks.

Dwarf moray eel

Dwarf Moray eel

I was watching some fish in fairly shallow water when, below them, I noticed this eel tucked away in a groove in the rock. It looked different to anything I’d seen before, but often the young of a species can look very different to the adults. However, a browse through my fish book showed it’s a dwarf moray eel, which doesn’t grow to more than 12 inches long. The clinching feature, which can be seen in this photo, is the dark bar through its eye.

Dwarf morays are fairly common in Hawaii, but because of their size and their reclusive nature they’re not often seen. This was as far as this eel emerged from of its hiding place so I was happy to get this shot.

I think the pinkish pincushion next to it is a rock-boring urchin, which gets its name from the fact that it can bore into solid rock by scraping with its spines and teeth. A second of these urchins can be seen in the little recess below the main one.

Twisty whitemouth moray eel

Whitemouth Moray Eel in dead coral

Whitemouth Moray EelI’m always amazed and entertained by the ability of eels to disappear into a seemingly solid lump of coral or rock and then, a few moments later, emerge from some unexpected location. I mean, how do they know they’re going to find a way out? There must not be too many claustrophobic eels in the world.

This whitemouth moray eel illustrates the concept in a small patch of dead coral.

Posted in response to this week’s WordPress Photo Challenge ‘Twisted.’