A tugboat maneuvering the RV Sonne into the harbor of Cape Town after four weeks of transit from Emden. Due to COVID-19, we were not allowed to leave the ship, not even for a jog in the harbor.
You’ve probably heard of the Sargasso Sea – it is well-known for the floating seaweed called Sargassum that provides a habitat for baby sea turtles and many other sea critters. Floating in the Atlantic Ocean just off the east coast of North America, it’s also the region where the European and American eels mate, a process that scientists still don’t fully understand after centuries of research.
For the last 10 years, a phenomenon has occurred in the Atlantic where never-ending masses of Sargassum inundate beaches after uncharacteristically large blooms occurred. The Sargassum originates from the nutrient-poor waters of the North Equatorial Recirculation Region off the west coast of Africa and spreads throughout the Atlantic Ocean and adjacent ocean basins, affecting the Caribbean, states surrounding the Gulf of Mexico, South America and even Africa. Tom Theirlynck is a marine biologist, currently working on his PhD at the Royal Netherlands Institute for Sea Research (NIOZ) and University of Amsterdam (IBED-FAME), and he as part of the Amaral-Zettler (NIOZ/UvA) research group is studying the excessive Sargassum blooms in detail.Read more
Milk, cheese and ice cream…if these words make your mouth water rather than induce a panicked search for the nearest bathroom, you’re one of humanities’ recently evolved lactose-tolerant specimens.Read more
The “Candelabra” black smoker at a water depth of 3,300 meters in the Logatchev Hydrothermal Field on the Mid-Atlantic Ridge (Image Credit: MARUM − Zentrum für Marine Umweltwissenschaften, Universität Bremen, CC BY 4.0, Image Cropped)
The deep sea is an unimaginably large and dark environment, and humanity’s attempt to learn about it is comically clumsy. Sampling the animals in the deep sea is often done “blindly”, by dragging nets along the ocean floor or through the water column, or bringing up cores of deep-sea sediment. The most sophisticated, precise and least destructive method is using underwater robots that have arms that can be controlled remotely to sample specific animals in real time, though naturally, this is also the most expensive.
These sampling efforts are comparable to sampling a rainforest with a helicopter. At night. With a map that a kindergartener drew. How long would it take to get a reliable record of all the different species of bird, beetle, monkey and flower found in the rainforest? How long to find a male and female of every species?Read more
While many biologists have to spend arduous days in the field, often sweating, getting stuck in mud or bitten by a million mosquitos, Dr. Benjamin Clanner-Engelshofen carries his study species wherever he goes: on his own forehead.
He finished his first PhD in October 2020 and is both a pharmacist and medical doctor, currently practicing at the clinic and polyclinic for dermatology and allergy of the Ludwig Maximilian University Hospital in Munich. His work focuses on the little mites that live on all of us.Read more
The discovery of ‘lesbian’ seagulls in California in the 1970s shook outdated beliefs that homosexuality was unnatural. Since then, scientists have documented cases of homosexuality in hundreds more species (Image Credit: JanBirdie, Pixabay licence)