Operculum is the hard scalelike cover of the gills of bony fishes. Cartilaginous fishes (such as sharks, skates and rays) all lack a gill cover.
Image (c) www.webs.lander.ed
Marine & Freshwater Environmental Education
Operculum is the hard scalelike cover of the gills of bony fishes. Cartilaginous fishes (such as sharks, skates and rays) all lack a gill cover.
Image (c) www.webs.lander.ed
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Some might say that the horseshoe crab is quite possibly the scariest looking creature along the shoreline. However, I disagree. There’s actually a sweetheart of an animal underneath that tough, pointy, chitin exoskeleton. I am certain that the horseshoe crab has survived since before the time of the dinosaurs due to its ability to adapt […]
It’s seems as good a time as any to recognize and share some inspiring and insightful blogs. Especially, since the blog, 365 Days, acknowledged Beach Chair Scientist as a Kreativ Blogger (a much appreciated, peer award). In that spirit of camaraderie, here are 7 compelling and very insightful 7 bloggers, as well as more on […]
Portolan refers to navigational charts dating back to the Renaissance. They were focused on coastal outlines and included seaports, river openings, shoals and hazards. The distance from one point to another was always included. Latitude and longitude were not features on the maps, neither was interior land. Portolan comes from the Italian adjective “portolana” meaning […]
I tend to be a little quiet and not post often in April. With Earth Day as a central theme for so many organizations this month, what more can I offer? Well, I can share 50 simple ways to make Earth Day, Every Day! These small actions will have you thinking more about how we’re […]
Dear friend, you were right: the smell of fish and foam and algae makes one green smell together. It clears my head. It empties me enough to fit down in my own skin for a while, singleminded as a surfer. The first day here, there was nobody, from one distance to the other. Rain rose […]
An animal has many reasons to behave more like a ‘wallflower’ vs. a ‘social butterfly’. Some of the more universal reasons to lean to one behavior more than the other would be 1) habitat, 2) predators or 3) availability of food. For instance, river dolphins (pictured right) typically are solitaire animals because their habitat is […]
Jellies don’t technically float; they’re neutrally buoyant (or close to it). Floating would be bad. It would mean being stuck on the surface, like a boat. Jellies are mostly water-up to 96%. What’s left is mostly the “jelly” in a jellyfish, the mesoglea. Jellies sink exceedingly slowly, and make up for it with just a […]
Zooxanthellae are the photosynthetic organism that live within coral reefs and supply the food to the reef building corals. They have a symbiotic relationship with the other protists but can also live an independent life. Enjoy this quick video about the process!
Horseshoe crabs are an arthropod more closely related to spiders and scorpions than crabs and lobsters. They have a three part body: prosoma (head), opisthosoma (heavy shell with legs under it) and the telson (tail). This amazing body structure has been unchanged for over 200 million years. Interestingly enough, this is this Beach Chair […]
Happy Tuesday! I am sure you know by now, but this is a series I have been featuring each Tuesday this summer to get a special sneak peek at the different personalities behind the scientists, activists, and educators (including bloggers) who play an integral role in the marine science conservation field. It’s essentially an extension […]
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