I feel like I have to start off with a huge apology for being so much of a novice at photography...and for being a bit slow to figure it out.
One of the main reasons for at least a couple of us to visit the Aquarium of the Pacific in Long Beach was to see the sea horses and sea dragons. And the jellies. Jellies are always cool. (You did know that medusa is synonym for jellyfish, right?)
But most of any aquarium visit is inside poorly lit rooms built to allow people to view the contents of variously sized glass boxes. That's a real challenge for a mediocre photographer with a flash camera. Every photo has to be at an angle, which reduces the clarity (q.v. your physics classes on refraction and reflection), and some of them are bound to be just too damn dark. Thus many of my photos of the creatures we really wanted to remember are substandard.
But even if you don't come in, have a dragon on the house.
Fortunately I figured out that I should switch to my iPhone instead while we still had some time remaining, so if you will bear with me through the trash, I hope that you'll find some nuggets by the end. I've tried not to include anything that ended up being totally worthless.
GreenRoots is an environmental series created by Meteor Blades and Patriot Daily for Daily Kos. This series provides a forum for educating, brainstorming, discussing and taking action on various environmental topics.
Please join a variety of hosts on Sunday, Tuesday, and Thursday at 6 pm PDT. Each Wednesday is hosted by FishOutofWater
Most of the photos of jellies, taken with the flash camera, turned out dark, like the one below on the upper left. The tanks are dark so patrons might be able to see the jellies fluoresce, of course. The only one that came out half-way decent is on the upper right. I did try to play with some false-color versions. They are on the second row.
The best of the false color versions, in my opinion, appears to the left. I just wish something approximating the very subtle coloration of the jelly which one could see with the naked eye was visible. This jelly was gorgeous. I'm not an expert at identification, but it is quite possibly a sea nettle.
Not being a total idiot, I did run back to grab one photo of some jellies using my iPhone camera. That's the shot below of the moon jellies. Sea nettles and moon jellies are both scyphomedusae. Jellyfish constitute an entire phylum; the jellies I have shots of are from the most common of the four classes, except for the very small and short-lived hydromedusae. Scyphomedusae are the large jellies most people think of when they think jellyfish.
So maybe you, kind reader, might be able to imagine the beauty that I was trying to catch when I took the others. And if that imaginative leap can be made, maybe displaying the images above wasn't a total waste.
Jellyfish are dioecious; that is, they are usually either male or female (occasionally hermaphroditic specimens are found). In most cases, both release sperm and eggs into the surrounding water, where the (unprotected) eggs are fertilized and mature into new organisms. In a few species, the sperm swim into the female's mouth fertilizing the eggs within the female's body where they remain for the early stages of development. In moon jellies, the eggs lodge in pits on the oral arms, which form a temporary brood chamber for the developing planula larvae.
After fertilization and initial growth, a larval form, called the planula, develops. The planula is a small larva covered with cilia. It settles onto a firm surface and develops into a polyp. The polyp is cup-shaped with tentacles surrounding a single orifice, resembling a tiny sea anemone. After a growth interval, the polyp begins reproducing asexually by budding and, in the Scyphozoa, is called a segmenting polyp, or a scyphistoma. New scyphistomae may be produced by budding or new, immature jellies called ephyrae may be formed. A few jellyfish species can produce new medusae by budding directly from the medusan stage. Budding sites vary by species; from the tentacle bulbs, the manubrium (above the mouth), or the gonads of hydromedusae. A few of species of hydromedusae reproduce by fission (splitting in half).
--wikipedia
And now on to the family Syngnathidae, which includes the pipefishes, sea horses and sea dragons. This was our Holy Grail. So cool.
I have to admit that I didn't know that pipefishes fit with the others at the time of our visit to the aquarium, but rather learned that during the development of this essay. It is therefore just a wonderful serendipity that I have a photo of some pipefish, below on the left side of the photo.
Pipefish have an extremely interesting swimming orientation. But I have to admit I felt a kinship. I often feel like I am living in a world perpendicular to the general drift.
I was actually trying to catch a shot of the sea horses hidden in the vegetation on the right. Can you see them? They are just below the reddish vegetation on the right.
The capability sea horses have at camouflaging is awesome. They have the ability to change colors and do so for social purposes, such as blushing yellow in the morning as a greeting.
But one might suppose that what interests me most about sea horses is their courtship ritual. I suppose one would be right.
When two parties discover a mutual interest at the beginning of breeding season, they court for several days, even while others try to interfere. During this time they have been known to change color, swim side by side holding tails or grip the same strand of sea grass with their tails and wheel around in unison in what is known as their "pre-dawn dance". They eventually engage in their "true courtship dance" lasting about 8 hours, during which the male pumps water through the egg pouch on his trunk which expands and cleaves open to display an appealing emptiness. When the female’s eggs reach maturity, she and her mate let go of any anchors and snout-to-snout, drift upward out of the seagrass, often spiraling as they rise. "The female inserts her ovipositor into the male’s brood pouch, where she deposits her eggs, which the male fertilizes. The fertilized eggs then embed in the pouch wall and become enveloped with tissues." New research indicates the male releases sperm into the surrounding sea water during fertilization, and not directly into the pouch as was previously thought. Most seahorse species' pregnancies last approximately two to three weeks.
As the female squirts anywhere from dozens to thousands of eggs from a chamber in her trunk into his pouch, her body slims while his swells. Both seahorses then sink back to the bottom and she swims off. Scientists believe the courtship behavior serves to synchronize the movements of the two animals so that the male can receive the eggs when the female is ready to deposit them. The eggs are then fertilized in the father’s pouch which is coursed with prolactin, the same hormone responsible for milk production in pregnant women. He doesn’t supply milk, but his pouch provides oxygen as well as a controlled environment incubator. The eggs then hatch in the pouch where the salinity of the water is regulated. This prepares the newborns for life in the sea. Throughout the male’s pregnancy, his mate visits him daily for "morning greetings". The female seahorse swims over for about 6 minutes of interaction reminiscent of courtship. "They change color, wheel around sea grass fronds, and finally promenade, holding each other’s tails. Then, the female swims away until the next morning, and the male goes back to vacuuming up food through his snout."
--wikipedia
From one pregnancy, a male sea horse can give live birth to between 1 and 2000 fry. But the fry are small. Get it? Nyuk, nyuk, nyuk.
So I've got six photos below of sea horses, in various degrees of quality and yukitude. And varying stages of the dance.
So there you have a sea horse swimming horizontally, some pre-dawn dancers and true courtship, as well as some pregnancy, which is sort of slimy-looking through the flash camera. The ballet of the sea horse on the lower right is included for its sheer beauty.
I did run back and take a couple of photos of the sea horse pregnancy with the iPhone. They look much better, I think, :-)
I just wish the iPhone camera had a zoom feature.
Did you know that each sea horse has a unique coronet on top of its head and that they are distinctive as fingerprints?
And finally there's this:
The question of why it is the males who undergo pregnancy rather than the females is actually not entirely known, though some researchers believe male pregnancy allows for shorter birthing intervals, hence more offspring.
Let me mention that the pipefishes share the same reproductive behavior as the sea horses.
Pipefishes, like their seahorse relatives, leave most of the parenting duties to the male. Courtship tends to be elaborately choreographed displays between the males and females. Pair bonding varies wildly between different species of pipefish. While some are monogamous or seasonally monogamous, others are not.
Male pipefishes have a specially developed area to carry eggs, which are deposited by the female. In some species this is just a patch of spongy skin that the eggs adhere to until hatching. Other species have a partial or even fully developed pouch to carry the eggs. The location of the brood patch or pouch can be along the entire underside of the pipefish or just at the base of the tail, as with seahorses. Many species exhibit polyandry, a breeding system in which one female mates with two or more males. This tends to occur with greater frequency in internal brooding species of pipefishes than with external brooding species.
--wiki
As transfixing as sea horses can be, sea dragons can be mesmerizing. I didn't see any weedy sea dragons, though that doesn't mean they weren't there. But leafy sea dragons R Us.
And camouflage are them. The leafy parts have no other known purpose than camouflage, to make them appear to be just so much floating seaweed, often more than 18 inches long. They have pectoral and dorsal fins for propulsion.
There is a similarity with sea horses when it comes to mating behavior, in that the female lays her eggs on the tail of the male. However the eggs are not laid inside the male, but rather attach themselves to a brood patch. The eggs change color from bright pink to purple to orange as they mature, which takes about 9 weeks.
These first three photos were taken with the flash camera.
It was at that moment that it occurred to me to use the iPhone's camera. And so I have the following dance of the sea dragons. I can't really think of any words to add to these photos.
Since I thought it needed a weedy sea dragon, I searched and found this--->
Several times during my study of these creatures, I encountered mention of Project Seahorse. Saving seahorses means saving the seas.
And through them, I encountered the magnificent video below created by Earth Touch about the coral reefs and mangroves and sea grass habitats the syngnathidae prefer. It's about fifteen minutes in length, but well worth the viewing.