#4 Japanese fishermen used to use glass balls on their fishing nets to help them float and these broke free from the nets and floated away are found all the time on the west coast of North America.

#24 Looked this up, it is illegal Chinese fishing vessels using lights to attract squid and other fish.

#27 I don't know what the picture is supposed to represent (other than possibly water). No-one dives in the Mariana Trench without a custom submersible.

#9 part of time machine "ask Indy Jones"

#1 Is the remains of a Cone Snail shell. Maybe a little worn off by sand and water. Alive, it is very venomous.

#23 Thats a gumboot. A sea snail with a back that looks hard and rock-like. Tastes like a rubbery clam, so its good for soup.