Table 1.

Search query strings. ALL means that search is made through the whole text of the article, ABS stands for abstracts, KEY stays for keywords, SRC TITLE stands for title of the source (journal, conference or book), double quotes are used to search for the exact string; the star symbol * represents any character, allowing the search for any word with a specified prefix. MTS stands for Marine Technology Society.

	String 1	String 2
ALL	gripper OR manipulation OR finger OR hand
	AND
TITLE-ABS-KEY	underwater OR deep-sea OR marine OR subsea
	AND
TITLE-ABS-KEY	robot* OR “end effector”	-
SRC TITLE	-	robot * OR (ocean * AND engineering) OR (marine AND technology) OR (autonomous AND vehicle) OR (mts AND ocean)