what three types of samples were collected by hms challenger between 1872 and 1876
seafloor
-1
Section::::Scientific objectives.

Challenger expedition
88284
water
-1
Section::::Preparations.

Challenger expedition
88284
biota
-1
Section::::Scientific objectives.

Challenger expedition
88284
4734938476710597051
NONE
Section::::Scientific objectives.

Challenger expedition
88284