I need help. My brain remembered a SciFi book I bought at a used book shop when I was 13ish
I can't remember the title, it was may something like The Sea Monsters, The Sea Devils
One of the main characters was a woman who was friends with these large sea creatures. All I can remember is a scene where they show up on the beach, drop her off /to live with her own kind/ and she panicking and pleading for them not leave her there.
Cover art was def 70's maybe early 80's style it had one of the creatures, and I think her in a light colored wetsuit/dry suit
If you know of a directory of old sci-fi books or an archive of sci-fi book covers please please please let me know I can't get my brain to stop obsessing about it