Answer:
-documenting species.
Explanation:
In mid 19th century, the main concern of marine scientists was the collection description, and cataloging of marine organisms.
Scientists used different methods in the collection of specimen
This were:
- Marine biologists adapted traditional dredges and trawls to collect specimens from the ocean floor.
- Hoop nets were used to secure free-swimming animals.
- New instruments for collecting water samples and obtaining.
- Temperature information at any desired depth were also developed.
In the late 19th century, the focus of marine scientists began to shift from collecting and cataloging to systematic analysis of marine ecosystems and the ecological roles and behavior of marine life.
