A school is used in reference to a grouping of fish, whereas a pod refers to a grouping of cetaceans - which are mammals - such as dolphins or whales.
A Pod or a School
Tommy plants a tree seed pod at the foot of Izzi's grave. The seed pod is from a Sweetgum tree, though the pod seems to have lost all of its seeds.
An oak has an acorn and it is the seed pod.
Prosopis Mesquite beans grow in a pod as they are legumes.
It could be an example of predation where one animal feeds on another. Or it could be an example of the dolphin as a consumer in the food chain.
Variously a Pod, a Herd or a School but mostly a pod.
A group of Narwhals is a pod or school.
An orca school is a pod.
The collective nouns are a herd, a school or a pod of porpoises.
Pod
A group of whales is a pod or school.
a group of whales is called a school or a pod EG a school of killer whale or a Killer whale pod
Pod
A Pod or a School
A Pod or a School
A pod.
I group of whales is called a pod. Although they are not technically whales, cetaceans such as dolphins, orcas and porpoises also travel in pods.