whalesucker

[ hweyl-suhk-er, weyl- ]
/ ˈʰweɪlˌsʌk ər, ˈweɪl- /

noun

a large, blue remora, Remora australis, that attaches itself to whales and dolphins.

Origin of whalesucker

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019