a shiver of sharks outline silhouette against a blue backdrop

swarm school shiver frenzy herd gam shoal grind college white turquoise blue backdrop background computer generated graphics illustrations isolated jet black bold outline outlines outlined silhouette shape shapes shaped shark sharks predator predators carnivore carnivores blood scent lust bloodlust thirsty prey preys preying smaller fish fishes marine aqua deep sea seas ocean saltwater freshwater fin fins pectoral elasmobranch cartilaginous gill gills great razor razors sharp teeth row rows apex jaw jaws gape gaping agape olfactory fast swift bite biting