Planning on swimming at the beach this summer? Learn some facts about sea jellies before you ask a friend to pee on a sting wound! Sea jellies have specialized cells called cnidocytes on their tentacles that contain structures called nematocysts. Nematocysts act like harpoons that deliver a venomous sting. Though people say that urine can…

Pacific and Atlantic herring (Clupea pallasii and Clupea harengus) are a large part of the commercial fishing industry and are thus well studied by scientists. However, nighttime sounds coming from the herring left scientists stumped, until video analysis revealed the herrings’ elusive communication style. Described aptly as Fast Repetitive Tick (or FRT), herring use digestive gas…

Did you know that North American red squirrels (Tamiasciurus hudsonicus) announce territorial ownership by making vocalizations called rattles? Recently, a study found that short-term stress from capturing and handling squirrels affected acoustic structure of these vocalizations. This research reveals that rattles may also carry important information about squirrel physiological condition. Sketch contributed by Rachael Coon and…

In the 1970s and 80s, researchers thought that kangaroos didn’t fart, or at least that they hardly emitted any methane gas. Methane is naturally created by the bacteria that lives inside an animal’s gut, helping them to digest plant materials. Early findings indicating that kangaroos emit little methane made scientists think that they had special…

Purple sea urchins (Strongylocentrotus purpuratus), believe it or not, are actually closely related to humans as revealed by genomic sequencing.  Sea urchins, in general, have a range of lifespans, and purple sea urchins have one of the highest with a maximum of more than 50 years!  This makes sea urchins relevant for a variety of aging research.  …

For years, humans have postulated and told folktales to answer the question, “Why did zebras get their stripes?” Now scientists may have an answer: pest control! While the stripes may not deter biting flies from afar, researchers found that flies failed to make controlled landings on the zebra by either failing to decelerate and bumping…

“Fish are babies, not food!” Mother Astatotilapia burtoni cichlids may need to take a reminder from the sharks of Finding Nemo. These fish have an extreme form of maternal care. After laying their eggs, they carry them around in their mouths until they hatch! Protecting their eggs from all kinds of would-be predators comes at…

Many caterpillars have colorful and sometimes toxic defenses against predators, but the North American Walnut Sphinx caterpillar really knows how to startle a would-be attacker. These little guys produce high-pitched whistles that have birds diving away from them in confusion! Fact and sketch contributed by Amelia Munson Source: Bura, V. L., Rohwer, V. G., Martin, P….

*Sniff, sniff* “That’s my favorite!” Rabbits can transfer food preference information to their offspring during different stages of development. They can be exposed to the mother’s food preference in utero, through nursing, and through exposure to the mother’s poop that are in the nest!  Sketch and fact contributed by Karli Chudeau Bilko, A., Altbacker, V. &…