Horseshoe crabs swim or crawl as their primary means of locomotion. Both larvae and juveniles are more active at night than during the day (Rudloe, 1979; Shuster, 1982: Thompson, 1998). Why is my horseshoe crab swimming? Well first, let’s explore Read more…
450 million years old. They’re living fossils. These ocean critters predate the dinosaurs! The oldest known horseshoe crab species, (Lunataspis aurora) was discovered by scientists in 2008 and is estimated to be nearly 450 million years old. How long has Read more…
The horseshoe crab is edible. People in some parts of the world eat horseshoe crab as a delicacy. The meat is white and has a texture similar to lobster. However, the horseshoe crab is not popular to eat everywhere. What Read more…
Without interrupting spawning, it is possible to determine the gender of the horseshoe crab by the size and location. The females are larger in size than the males and are usually buried in the sand with one or more males Read more…
Limulus Amebocyte Lysate. Horseshoe crabs are also extremely important to the biomedical industry because their unique, copper-based blue blood contains a substance called “Limulus Amebocyte Lysate“, or “LAL”. What color is horseshoe crab blood and why? A horseshoe crab’s blood Read more…
That’s why the same sensation can have a very different emotional component depending on the source. Horseshoe crabs have a nervous system, so they can feel nociception, but with such limited brains and no endocrine system at all it’s unlikely Read more…
Horseshoe crabs prefer to breed at night during high tides and new and full moons. How do horseshoe crabs mate? When mating, the smaller male crab hooks himself to the top of the larger female’s shell by using his specialized Read more…
Like many other aquatic animals, horseshoe crabs breathe through gills. They have six pairs of gills along the bottom of the opithosoma. These are called book gills because they look like pages in a book. Can horseshoe crabs breathe in Read more…
Before their 400-million-year reign began, horseshoe crabs developed a number of adaptations that allow them to survive, including numerous eyes, hard shells, a specialized assortment of appendages and a primitive immune-like response to bacteria. How did horseshoe crabs survive mass Read more…
Horseshoe crabs are popular marine animals that are consumed as food, and most people do not know that they are poisonous. There are two species of horseshoe crabs in Thailand: round-tailed horseshoe crab (Carcinoscorpius rotundicauda) and square-tailed horseshoe crab (Tachypleus Read more…