Weekly Water Critter – The Blue Dragon

Weekly Water Critter – The Blue Dragon

After some soul searching I have recently decided to expand my territory from weekly fishes to weekly water critters in general, for the seas, lakes and rivers of the world are filled with too many amazing animals to just limit myself to the scaly ones. And what better way to start than by presenting one of my favourite animals of all time, the little marine sea slug Glaucus atlanticus. Known by various wonderful names including sea swallow and blue dragon, this stunningly beautiful creature employs one of the most nifty acts of thievery in the animal kingdom. Continue reading “Weekly Water Critter – The Blue Dragon”

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Weekly Fish – Choking Fish Syndrome (Fish Maws Part III)

Weekly Fish – Choking Fish Syndrome (Fish Maws Part III)

Fishes can be quite slippery. Slimy even. Grabbing hold of one can be rather challenging. There are exceptions of course, sharks for instance are famously unslippery (though one might be wary of grabbing a shark for reasons of personal safety). At any rate, fish-eating fishes have had to deal with the problem of slippery prey for ages, and have come up with two main solutions. The first is suction-feeding, where the predator creates negative pressure in its oral cavity to suck in and swallow its prey, thus avoiding the need to grab onto the slippery victim. The other is to use teeth. Lots and lots of teeth. Continue reading “Weekly Fish – Choking Fish Syndrome (Fish Maws Part III)”