• towfish
• eyesplice

Task 2

• U-boat
• captain's bell

Task 3

• leaking barrel
• patch

Task 4

• Bohm fish
• sampling basket

Task 5

• tubeworm tag
• methane seep (note:  not actual size)
• tubeworm cluster

Task 6

• mussel tag
• mussel bed

Task 7

• carbonate