沈める

(1) to sink/to submerge/ (2) to floor (an opponent)

潜り込む

(1) to slip into/to crawl into (under) /to conceal oneself (under) / (2) to sneak into/to infiltrate

潜る

(1) to dive (into or under water) / (2) to get under/to get into/to get in/to creep into/to crawl under/to bury oneself/to burrow into/to dig oneself into/to snuggle under/ (3) to hide oneself (from the government) /to conceal oneself/to go unde