A characteristic one has. It could be appearance or personality
I suggest you watch the Amoeba Sisters video again, 1-2x and take notes.
Biomagnification is when toxins / heavy metal are present in small amounts in fish, but accumulate as you move into higher trophic levels. This is one reason why it can be toxic for humans to eat tertiary or quaternary consumers, such as swordfish, shark, etc.
Answer:
She dove down to 880 feet and turned off her lights to observe bioluminescent animals in their natural habitat without visual obstruction from overhead lights. She saw many different animals of all shapes and sizes releasing bioluminescent light in different forms and variations.
