Reefclaw

Reefclaws are aquatic monsters that resemble huge shrimp or lobsters. As one might expect from its name, a reefclaw's oversized claws are powerful weapons with a viselike grip and the ability to inject potent venom into unfortunate prey. Though reefclaws can't speak, they are intelligent enough to understand the local language of humanoids near their hunting grounds. The creatures sometimes listen to conversations, either to gain intelligence on the best place to ambush aquatic or land-dwelling