Over the last weeks, we posted pictures with scientific explanations on classifications of marine life on Instagram and Facebook. As not everybody is (regularly) on social media, I am happily putting it all together in one post now: Let’s talk scientific!
Let’s talk scientific!
When looking only at the hard shell, one wonders why these beautiful sea snails are called tiger cowries. But, as this picture reveals, when the mantle is closing over the top, there are stripes visible, and pin-like projections with white tips (more Art by nature here). This creature is one of the many species that have been described by Carl Linnaeus in the 18th century: Cypraea tigris (1758). His systema naturae formed the basis of the classification of species (taxonomy) we still use today.
For all of us marine biology nerds and ocean lovers, in this case, the classification goes as follows:
Species: C. tigris
The camouflage of this ambush predator continues over its eye. These fringes of skin break up the outline of the eye, concealing the Devil Scorpionfish (Scorpaenopsis diabolus) even better while it sits and waits for prey. Common names vary, some call this creature a False Stonefish. Looking at the scientific name reveals it is classified as a diabolic scorpion whereas stonefish belong to the family of Synanceiidae.
We just started a series presenting different species of ambush predators in stories and pictures on our website starting with the look in their eyes: „They got the look„.
Species: S. diabolus
Octopuses are not only masters of disguise, but also intelligent and even have different personalities within the same species of octopus. The Mimic Octopus (Thaumoctopus mimicus) is the only animal capable of mimicking various other animals. However, this one was more hiding from the current – or from us … The plural of octopus is octopuses and not octopi as quite some people say. The origin of the word is greek: okto = eight and pod = foot, even though we call them arms these days.
Species: T . mimicus
The characteristic of aeolid nudibranch like this Tenellia sp. are long, narrow bodies with numerous horn-like extensions which are called cerata and serve as gills of these sea slugs. Nudibranch originates from the Latin word nudus meaning naked and Ancient Greek bránkhia for gills as nudibranchs have their gills exposed on their backs. The form of the cerata extends the surface for respiration significantly and is also used for defence. Tenellia feed on hydroids and their stinging cells (nematocysts) pass through the digestive system of some aeolids and are built into the tips of their cerata. Not only cute but feisty!
Tenellia sp. (sp. is short for species when there is no scientific description of the species yet). Formerly listed as Cuthona sp., the classification of the genus changed in 2016 when all species of Cuthona were transferred to Tenellia. The whole family of Trinchesiidae is still further investigated to clarify the species and genus of many group members (genus and species). Scientific knowledge is ever-expanding!
Cackatoo (Ablabys taenianotus) and white-faced waspfish (Richardsonichthys leucogaster) are living proof that punk is not dead. Just look at them! More detailed information on these two guys is in their own entry here. Looking at them scientifically speaking reveals that common names can be misleading. They are in the same order Scorpaeniforms, but with different families and genus (see classifications below). Both can be found in sand, rubble or mud in particular in the evening and night. These guys were shot in Lembeh.
Species: A. taenianotus
White face waspfish
Species: R. leucogaster
Lactoria cornuta is also sometimes called horned boxfish. This one is still a teenager, but a feisty one. It didn’t try to avoid the focus light on our night dive, though it also didn’t really stay in the spotlight precisely, playing rather bull than a cow. It took a particular liking to Yoeri and his equipment, the preferred spot, however, was under the port.
In any case a real cutie: Fishes are part of the phylum Chordata, meaning they are vertebrates. Invertebrate sums up everything else in the Kingdom Animalia with a total of 34 Phyla of which 9 include most of the animals. One of these nine is Chordata. Invertebrate, therefore, isn’t a scientific classification, but simply throws all other animals of 33 Phyla, from Cnideria (e.g. corals) to Mollusca (e.g. nudibranchs), into the same pot.
Species: L. cornuta
In conclusion on classifications of marine life
We hope our pictures and classifications of marine life made it evident why it is called let’s talk scientifically. Even though a lot of the names derive from Latin, it is not the only source for scientific names. However, the endings of the words are put into Latin, even if the word originates in Greek. Confusing? That’s science for you! One of the latest new species we read about was Eurythenes plasticus (in Dive Magazine). This amphipod has been discovered by a team of scientists from Newcastle University in the UK. The specimen was collected during an expedition to the Sirena Deep, the third-deepest known part of the Mariana trench, in November 2014 and showed to have microplastic fibre in its hindgut. That’s humanity for you …