The first object which saluted my eyes when i arrived on the coast was the sea, and a slave ship, which was then riding at anchor, and waiting for its cargo. these filled me with astonishment, which was soon converted into terror when i was carried on board. i was immediately handled and tossed up to see if i were sound by some of the crew; and i was now persuaded that i had gotten into a world of bad spirits, andthat they were going to kill me.

paraphrase this excerpt.