An example of a homologous animals would be crabs and spiders. Both of these animals came from the Arthropoda. This would in turn split off and evolve into Crustaceas, i.e crabs and lobsters, and Arachnida, i.e spiders and scorpions. While crabs are sea creatures that have lived underwater for hundreds of millions of years they have, like the spider, developed a hard exoskeleton made of chiton, they molt, and have jointed legs. Crabs are creatures that troll seabeds, they are omnivores that typically eat algae, and are referred to in some circles as ‘sea bugs’. Crabs are found all over the ocean, rivers, and even on land (though still nearby water). Spiders on the other hand are land based creatures that form webs as a way to capture their prey, they have 8 legs and tend to be in small, isolated spaces. Spiders can also be found around the globe and it’s thought the widespread of spiders have been helped by the international shipment of produce. Both of these creatures, crabs and spide...