Topic
Marine Arthropods
2 questions tagged Marine Arthropods — spanning every one of the seven Ws.
what
What is a horseshoe crab?
A horseshoe crab is a marine arthropod with a hard shell and blue blood, more closely related to spiders and scorpions than to true crabs.
AnimalsMarine Arthropods
when
When was the horseshoe crab first scientifically described?
The Atlantic horseshoe crab was first described in 1758.
AnimalsMarine arthropods