Symbiosis is a scientific term that describes how two different species of animal work together to survive. Most of the time these pairings are beneficial to one or both parties but sometimes they can also be harmful to one of the animals. Symbiotic relationships in the ocean can be classified as: parasitism, commensalism, and mutualism
PARASITISM Parasitism relationships happen when one species benefits, and the other is harmed. In this symbiotic relationship, the species can either be the parasite or the host. The parasite species, even if it is smaller in size takes advantage of the host species. In a parasitic relationship, the host is harmed and does not receive any benefits from its parasite. Examples:
cymothoid isopod
copepod
COMMENSALISM Commensalism relationships happen when one species benefits by living with, on, or in another species, known as the host, and the host neither benefits nor is harmed in the partnership. Examples:
Barnacle and whale
Jellyfish and juvenile fish
Sea cucumber and shrimp
MUTUALISM Mutualistic relationships in the oceans are when both species living closely together benefit equally from their relationship. Marine creatures in a mutualistic relationship rely on each other for food, protection, or other life functions Examples: