The drill holes left in fossil shells by hunters such as snails and slugs show marine predators have grown steadily bigger and more powerful over time but stuck to picking off small prey, rather ...

GAINESVILLE, Fla. --- The drill holes left in fossil shells by hunters such as snails and slugs show marine predators have grown steadily bigger and more powerful over time but stuck to picking ...

The drill holes left in fossil shells by hunters such as snails and slugs show marine predators have grown steadily bigger and more powerful over time but stuck to picking off small prey, rather ...

Snails that drill through shells, crabs that excavate tunnels and air pockets where little bubbles pop as the waves recede – they all leave holes.

Octopuses drill holes in their prey to get through their defenses. The researchers examined the empty shells of three species of octopus prey: an abalone, a kelp limpet, and a helmet snail.

Under higher acidity (lower pH), boring sponges drilled into scallop shells twice as fast, boring twice as many holes and removing twice as much shell over the course of the 133-day study.