Tourist Nash Core admits he felt some fear when he and his 11-year-old son waded into the ocean off the Australian coast to help rescue a 10-foot great white shark stranded in shallow water.

Microplastics are accumulating in sharks’ gonads and GI tracts, disrupting reproduction and threatening population recovery.

Opalescent baby squid have "midwives" to bring them into the world. Squid eggs wait in gelatinous orbs to hatch. Capitella ...